text:
\section{Introduction}

To study phase structure of QCD is a challenging and important task. It is
well known that QCD is in the confinement and chiral symmetry breaking phase
at the low temperature and small chemical potential, while it is in the
deconfinement and chiral symmetry restored phase at the high temperature and
large chemical potential. Thus it is widely believed that there exists a phase
transition between these two phases. To obtain the phase transition boundary
in the $T-\mu$ phase diagram is a rather difficult task because the QCD
coupling constant becomes very strong near the phase transition region and the
conventional perturbative method does not work well. Moreover, with the
nonzero physical quark masses presented, part of the phase transition line
will weaken to a crossover for a range of temperature and chemical potential
that makes the phase structure of QCD more complicated to study. Locating the
critical point where the phase transition converts to a crossover is an
important but difficult task. For a long time, the technique of lattice QCD is
the only reliable method to attack these problems. Although lattice QCD works
very well for zero density, it encounters the sign problem when considering
finite density or chemical potential, i.e. $\mu\neq0$. However, the most
interesting region in the QCD phase diagram is at finite density. The most
concerned subjects, such as heavy-ion collisions and compact stars in
astrophysics, are all related to QCD at finite density. Recently, lattice QCD
has developed some techniques to solve the sign problem, such as reweighting
method, imaginary chemical potential method and the method of expansion in
$\mu/T$. Nevertheless, these techniques are only able to deal with the cases
of small chemical potentials and quickly lost control for the larger chemical
potential. See \cite{1009.4089} for a review of the current status of lattice QCD.

On the other hand, using the recently developed idea of AdS/CFT correspondence
from string theory, one is able to study QCD in the strongly coupled region by
studying its weakly coupled dual gravitational theory, the so called
holographic QCD. The models which are directly constructed from string theory
are called top-down models. The most popular top-down models are D3-D7
\cite{0306018,0311270,0304032,0611099} model and D4-D8 (Sakai-Sugimoto) model
\cite{0412141,0507073}. In these top-down holographic QCD models, confinement
and chiral symmetry phase transitions in QCD have been addressed and been
translated into geometric transformations in the dual gravity theories. Meson
spectrums and their decay constants have also been calculated and compared
with the experimental data with surprisingly consistency. Although the
top-down QCD models describe many important properties in realistic QCD, the
meson spectrums obtained from those models can not realize the linear Regge
trajectories. To solve this problem, another type of holographic models have
been developed, i.e. bottom-up models, such as the hard wall model
\cite{0501128} and the later refined soft-wall model \cite{0602229}. In the
original soft-wall model, the IR correction of the dilaton field was put by
hand to obtain the linear Regge behavior of the meson spectrum. However, since
the fields configuration is put by hand, it does not satisfy the equations of
motion. To get a fields configuration which is both consistent with the
equation of motions and realizes the linear Regge trajectory, dynamical
soft-wall models were constructed by introduce a dilaton potential
\cite{0801.4383,0806.3830} consistently. On the other hand, the
Einstein-dilaton and Einstein-Maxwell-dilaton models have been widely studied
numerically \cite{0804.0434,1006.5461,1012.1864,1108.2029,1201.0820} to
investigate the thermodynamical properties and explore the phase structure in
QCD. Recently, by a potential reconstruction method, analytic solutions can be
obtained in the Einstein-dilaton model \cite{1103.5389} and similarly in the
Einstein-Maxwell-dilaton model \cite{1201.0820,1209.4512}.

In this paper, we try to combine the techniques of the dynamical soft-wall
model and the potential reconstruction methods to study QCD phase diagram as
well as the linear Regge spectrum of mesons. We consider a
Einstein-Maxwell-dilaton system with an arbitrary kinetic gauge function and a
dilaton potential as in \cite{1301.0385}. A family of analytic solutions are
obtained by the potential reconstruction method. We then study its holographic
dual QCD model. The kinetic gauge function can be fixed by requesting the
meson spectrums satisfy the linear Regge trajectories. By studying the
thermodynamics of the Einstein-Maxwell-dilaton background, we calculate the
free energy to obtain the phase diagram of our holographic QCD model. We
compute the different equation of states in our model and discuss their behaviors.

The paper is organized as follows. In section II, we consider the
Einstein-Maxwell-dilaton system with a dilaton potential as well as a gauge
kinetic function. By potential reconstruction method, we obtain a family of
analytic solutions with arbitrary gauge kinetic function and warped factor. We
then fix the gauge kinetic function by requesting the meson spectrums to
realize the linear Regge trajectories. By choosing a proper warped factor, we
obtain the final form of our analytic solution. In section III, we study the
thermodynamics of our gravitational background and compute the free energy to
get the phase diagram. We conclude our result in section IV

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\section{Einstein-Maxwell-Dilaton System}

We consider a 5-dimensional Einstein-Maxwell-dilaton system with probe flavor
fields as in \cite{1301.0385}. The action of the system have two parts, the
background part and the matter part
\begin{equation}
S=S_{b}+S_{m}.
\end{equation}
The background action includes a gravity field $g_{\mu\nu}$, a Maxwell field
$A_{\mu}$ and a neutral dilatonic scalar field $\phi$. While the matter action
includes two flavor fields $\left(  {A}_{\mu}^{L},{A}_{\mu}^{R}\right)  $,
representing the left-handed and right-handed gauge fields, respectively. The
Kaluza-Klein modes of these 5d flavor gauge fields describe the degrees of
freedom of mesons on the 4d boundary. We will treat the matter fields as probe
fields and do not consider their backreaction to the background.

In Einstein frame, the background action and the matter action can be written
a
\begin{align}
S_{b}  &  =\dfrac{1}{16\pi G_{5}}\int d^{5}x\sqrt{-g}\left[  {R-\frac{f\left(
\phi\right)  }{4}F^{2}}-\dfrac{1}{2}\partial_{\mu}\phi\partial^{\mu
\phi-V\left(  \phi\right)  \right]  ,\label{action-b}\\
S_{m}  &  =-\dfrac{1}{16\pi G_{5}}\int d^{5}x\sqrt{-g}{\frac{f\left(
\phi\right)  }{4}}\left(  {F_{V}^{2}+F_{\tilde{V}}^{2}}\right)  .
\label{action-m
\end{align}
where we have expressed the flavor fields\ ${A}^{L}$ and ${A}^{R}$\ in terms
of the vector meson and pseudovector meson fields $V$ and $\tilde{V}$
\begin{equation}
{A}^{L}=V+\tilde{V}\text{, \ \ }{A}^{R}=V-\tilde{V}.
\end{equation}
The equations of motion can be derived from the actions (\ref{action-b}) and
(\ref{action-m}) a
\begin{align}
\nabla^{2}\phi &  =\frac{\partial V}{\partial\phi}+\frac{1}{4}\frac{\partial
f}{\partial\phi}\left(  F^{2}+{F_{V}^{2}+F_{\tilde{V}}^{2}}\right)
,\label{eom1}\\
\nabla_{\mu}\left[  f(\phi)F^{\mu\nu}\right]   &  ={{0,}}\\
\nabla_{\mu}\left[  f(\phi)F_{V}^{\mu\nu}\right]   &  ={{0,}}\label{eom3}\\
\nabla_{\mu}\left[  f(\phi)F_{\tilde{V}}^{\mu\nu}\right]   &  ={0,}\\
R_{\mu\nu}-\frac{1}{2}g_{\mu\nu}R  &  =\frac{f(\phi)}{2}\left(  F_{\mu\rho
}F_{\nu}^{\rho}-\frac{1}{4}g_{\mu\nu}F^{2}+\left\{  {F_{V},F_{\tilde{V}
}\right\}  \right)  +\frac{1}{2}\left[  \partial_{\mu}\phi\partial_{\nu
\phi-\frac{1}{2}g_{\mu\nu}\left(  \partial\phi\right)  ^{2}-g_{\mu\nu
}V\right]  . \label{eom5
\end{align}
First, we will solve the gravitational background in the above
Einstein-Maxwell-dilaton system. We consider the following ansatz for the
metric, the Maxwell field and the dilaton fiel
\begin{align}
ds^{2}  &  =\dfrac{L^{2}e^{2A\left(  z\right)  }}{z^{2}}\left[  -g(z)dt^{2
+\frac{dz^{2}}{g(z)}+d\vec{x}^{2}\right]  ,\label{metric}\\
\phi &  =\phi\left(  z\right)  \text{, \ \ }A_{\mu}=A_{t}\left(  z\right)  ,
\label{ansatz
\end{align}
where $z=0$ corresponds to the conformal boundary of the 5d spacetime and we
will set the radial $L$ of $AdS_{5}$ space to be unit in the following of this
paper. By turning off the probe fields $V$ and $\tilde{V}$ in the equations of
motion (\ref{eom1}-\ref{eom5}), the equations of motion for the background
fields becom
\begin{align}
\phi^{\prime\prime}+\left(  \frac{g^{\prime}}{g}+3A^{\prime}-\dfrac{3
{z}\right)  \phi^{\prime}+\left(  \frac{z^{2}e^{-2A}A_{t}^{\prime2}f_{\phi
}{2g}-\frac{e^{2A}V_{\phi}}{z^{2}g}\right)   &  =0,\label{eom-phi}\\
A_{t}^{\prime\prime}+\left(  \frac{f^{\prime}}{f}+A^{\prime}-\dfrac{1
{z}\right)  A_{t}^{\prime}  &  =0,\label{eom-At}\\
A^{\prime\prime}-A^{\prime2}+\dfrac{2}{z}A^{\prime}+\dfrac{\phi^{\prime2}}{6}
&  =0,\label{eom-A}\\
g^{\prime\prime}+\left(  3A^{\prime}-\dfrac{3}{z}\right)  g^{\prime
-e^{-2A}z^{2}fA_{t}^{\prime2}  &  =0,\label{eom-g}\\
A^{\prime\prime}+3A^{\prime2}+\left(  \dfrac{3g^{\prime}}{2g}-\dfrac{6
{z}\right)  A^{\prime}-\dfrac{1}{z}\left(  \dfrac{3g^{\prime}}{2g}-\dfrac
{4}{z}\right)  +\dfrac{g^{\prime\prime}}{6g}+\frac{e^{2A}V}{3z^{2}g}  &  =0.
\label{eom-V
\end{align}
We impose the regular boundary conditions at the horizon $z=z_{H}$ and the
asymptotic AdS condition at the boundary $z\rightarrow0$ as follows
\begin{align}
A_{t}\left(  z_{H}\right)   &  =g\left(  z_{H}\right)  =0,\label{bc-zH}\\
A\left(  0\right)   &  =-\sqrt{\dfrac{1}{6}}\phi\left(  0\right)  \text{,
\ }g\left(  0\right)  =1,\label{bc-0}\\
A_{t}\left(  0\right)   &  =\mu+\rho z^{2}+\cdots,
\end{align}
where $\mu$ is quark chemical potential and $\rho$ is quark density. By the
potential reconstruction method, the above equations of motion (\ref{eom-phi
-\ref{eom-V}) can be analytically solved a
\begin{align}
\phi^{\prime}\left(  z\right)   &  =\sqrt{-6\left(  A^{\prime\prime
-A^{\prime2}+\dfrac{2}{z}A^{\prime}\right)  },\label{phip}\\
A_{t}\left(  z\right)   &  =\sqrt{\dfrac{-1}{\int_{0}^{z_{H}}y^{3
e^{-3A}dy\int_{y_{g}}^{y}\dfrac{x}{e^{A}f}dx}}\int_{z_{H}}^{z}\dfrac{y
{e^{A}f}dy,\label{At}\\
g\left(  z\right)   &  =1-\dfrac{\int_{0}^{z}y^{3}e^{-3A}dy\int_{y_{g}
^{y}\dfrac{x}{e^{A}f}dx}{\int_{0}^{z_{H}}y^{3}e^{-3A}dy\int_{y_{g}}^{y
\dfrac{x}{e^{A}f}dx},\label{gp}\\
V\left(  z\right)   &  =-3z^{2}ge^{-2A}\left[  A^{\prime\prime}+3A^{\prime
2}+\left(  \dfrac{3g^{\prime}}{2g}-\dfrac{6}{z}\right)  A^{\prime}-\dfrac
{1}{z}\left(  \dfrac{3g^{\prime}}{2g}-\dfrac{4}{z}\right)  +\dfrac
{g^{\prime\prime}}{6g}\right]  , \label{V
\end{align}
where the gauge kinetic function $f\left(  z\right)  $ and the warped factor
$A\left(  z\right)  $ are two arbitrary functions. Different choices of the
functions $f\left(  z\right)  $ and $A\left(  z\right)  $ will give different
physically consistent backgrounds. The undetermined integration constant
$y_{g}$ in the above solution is related to the chemical potential $\mu$ of
the dual QCD a
\begin{equation}
\mu=-\sqrt{\dfrac{-1}{\int_{0}^{z_{H}}y^{3}e^{-3A}dy\int_{y_{g}}^{y}\dfrac
{x}{e^{A}f}dx}}\int_{0}^{z_{H}}\dfrac{y}{e^{A}f}dy, \label{mu
\end{equation}
in which $y_{g}$ can be solved in term of the chemical potential $\mu$ once
the manifest forms of the gauge kinetic function $f\left(  z\right)  $ and the
warped factor $A\left(  z\right)  $ are given.

We next consider the 5d probe vector field $V$ whose equation of motion has
been derived in (\ref{eom3})
\begin{equation}
\nabla_{\mu}\left[  f\left(  \phi\right)  F_{V}^{\mu\nu}\right]  ={{0.}
\end{equation}
With the gauge $V_{z}=0$, the equation of motion of the transverse vector
field $V_{\mu}$ $\left(  \partial^{\mu}V_{\mu}=0\right)  $ in the above
gravitational background become
\begin{equation}
\dfrac{1}{g}\nabla^{2}V+V^{\prime\prime}+\left(  \dfrac{g^{\prime}}{g
+\dfrac{f^{\prime}}{f}+A^{\prime}-\dfrac{1}{z}\right)  V^{\prime
}=0,\label{eqV
\end{equation}
where the prime is\ the derivative respect to $z$. By expanding the vector
field $V$ for discrete values of 4d momentum $k_{n}=\left(  \omega_{n},\vec
{p}_{n}\right)  $
\begin{equation}
V\left(  x,z\right)  =\sum_{k_{n}}e^{ik_{n}\cdot x}X\psi_{n}\left(  z\right)
\text{, \ \ }X=\left(  \dfrac{z}{e^{A}fg}\right)  ^{1/2
\end{equation}
we bring the equation of motion (\ref{eqV}) into the form of the
Schr\"{o}dinger equatio
\begin{equation}
-\psi_{n}^{\prime\prime}+U\left(  z\right)  \psi_{n}=m_{n}^{2}\left(
z\right)  \psi_{n},
\end{equation}
with the potential function and the "energy dependent" mass a
\begin{equation}
U\left(  z\right)  =\dfrac{2X^{\prime2}}{X^{2}}-\dfrac{X^{\prime\prime}
{X}\text{, \ \ }m_{n}\left(  z\right)  =\sqrt{\dfrac{\omega_{n}^{2}
{g^{2}\left(  z\right)  }-\dfrac{\vec{p}_{n}^{2}}{g\left(  z\right)  }
\end{equation}
In the limit of zero chemical potential and zero temperature, i.e. $g\left(
z\right)  \equiv1$, we expect that the discrete spectrum of the vector mesons
obeys the linear Regge trajectories. In this case, the above Schr\"{o}dinger
equation reduces t
\begin{equation}
-\psi_{n}^{\prime\prime}+U\left(  z\right)  \psi_{n}=m_{n}^{2}\psi
_{n},\label{Shordinger
\end{equation}
where $m_{n}^{2}=\omega_{n}^{2}-\vec{p}_{n}^{2}$. Following \cite{0602229},
the simple choice of $f\left(  z\right)  =e^{\pm cz^{2}-A\left(  z\right)  }$
brings the potential to the for
\begin{equation}
U\left(  z\right)  =\dfrac{3}{4z^{2}}+c^{2}z^{2}.\label{potential
\end{equation}
The Schr\"{o}dinger equations (\ref{Shordinger}) with the above potential
(\ref{potential}) have the discrete eigenvalues
\begin{equation}
m_{n}^{2}=4cn,\label{mass
\end{equation}
which is linear in the energy level $n$ as we expect for the vector spectrum
at zero temperature and zero density.

Once we fixed the gauge kinetic function $f\left(  z\right)  =e^{\pm
cz^{2}-A\left(  z\right)  }$, the Eq.(\ref{mu}) can be solved to get the
integration constant $y_{g}$ in term of the chemical potential $\mu$
explicitly a
\begin{equation}
e^{cy_{g}^{2}}=\dfrac{\int_{0}^{z_{H}}y^{3}e^{-3A}e^{cy^{2}}dy}{\int
_{0}^{z_{H}}y^{3}e^{-3A}dy}+\dfrac{\left(  1-e^{cz_{H}^{2}}\right)  ^{2
}{2c\mu^{2}\int_{0}^{z_{H}}y^{3}e^{-3A}dy}. \label{yg
\end{equation}
Put the integration constant $y_{g}$ back into the solution (\ref{phip
-\ref{V}),\ we finally write down our solution a
\begin{align}
\phi^{\prime}\left(  z\right)   &  =\sqrt{-6\left(  A^{\prime\prime
-A^{\prime2}+\dfrac{2}{z}A^{\prime}\right)  },\label{phip-A}\\
A_{t}\left(  z\right)   &  =\mu\dfrac{e^{cz^{2}}-e^{cz_{H}^{2}}
{1-e^{cz_{H}^{2}}},\label{At-A}\\
g\left(  z\right)   &  =1+\dfrac{1}{\int_{0}^{z_{H}}y^{3}e^{-3A}dy}\left[
\dfrac{2c\mu^{2}}{\left(  1-e^{cz_{H}^{2}}\right)  ^{2}}\left\vert
\begin{array}
[c]{cc
\int_{0}^{z_{H}}y^{3}e^{-3A}dy & \int_{0}^{z_{H}}y^{3}e^{-3A}e^{cy^{2}}dy\\
\int_{z_{H}}^{z}y^{3}e^{-3A}dy & \int_{z_{H}}^{z}y^{3}e^{-3A}e^{cy^{2}}dy
\end{array}
\right\vert -\int_{0}^{z}y^{3}e^{-3A}dy\right]  ,\\
V\left(  z\right)   &  =-3z^{2}ge^{-2A}\left[  A^{\prime\prime}+3A^{\prime
2}+\left(  \dfrac{3g^{\prime}}{2g}-\dfrac{6}{z}\right)  A^{\prime}-\dfrac
{1}{z}\left(  \dfrac{3g^{\prime}}{2g}-\dfrac{4}{z}\right)  +\dfrac
{g^{\prime\prime}}{6g}\right]  . \label{V-A
\end{align}
Note that our final solution (\ref{phip-A}-\ref{V-A}) depends on the warped
factor $A\left(  z\right)  $. The choice of $A\left(  z\right)  $ is arbitrary
provided it satisfies the boundary condition (\ref{bc-0})

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\section{Phase Structure}

In \cite{1301.0385}, a simple form of the warped factor has been studied
\begin{equation}
A\left(  z\right)  =-\dfrac{c}{3}z^{2}-bz^{4}. \label{A
\end{equation}
The parameters $c\simeq1.16GeV^{2}$ and $b\simeq0.273GeV^{4}$ were determined
by fitting the lowest two quarkonium states, $m_{J/\psi}=3.096GeV$ and
$m_{\psi^{\prime}}=3.685GeV$, as well as comparing the phase transition
temperature at $\mu=0$ to the lattice QCD simulation of $T_{HP}\simeq0.6GeV$
in \cite{1111.4953}. With these parameters, the authors of \cite{1301.0385}
argued that the system is to describe the heavy quarks with the deconfinement
phase transition. However, in this work, we will consider another parameter
regime of $b$ and $c$ to study the light quarks with the chiral symmetry
breaking phase transition.

\subsection{Meson Spectrum}

We consider the same form (\ref{A}) of the warped factor $A\left(  z\right)  $
as in \cite{1301.0385}. We will determine the parameter $c$ by fitting the
meson spectrum (\ref{mass}) to the experimental data. Instead of fitting the
quarkonium states made up of heavy quarks in \cite{1301.0385}, we now consider
mesons made up of light quarks, i.e. $\rho$ meson and its excitations. We take
the experimental data of the lowest six excitations of $\rho$ meson from
PDG2007 \cite{PDG2007}. From the date, we fit the parameter $c\simeq
0.227GeV^{2}$ in the mass formula (\ref{mass}) by using the standard $\chi
^{2}$ fit \cite{0710.0988,0804.2731}. The experiment data and our fitting are
list in Table \ref{data}.

\begin{table}[ptb]
\begin{tabular}
[c]{|c|c|c|c|c|c|c|}\hline
$n$ & $1$ & $2$ & $3$ & $4$ & $5$ & $6$\\\hline
$m_{\rho^{n}}$ & $0.77$ & $1.45$ & $1.70$ & $1.90$ & $2.15$ & $2.27$\\\hline
Fitting & $0.95$ & $1.35$ & $1.65$ & $1.90$ & $2.13$ & $2.34$\\\hline
\end{tabular}
\caption{The experiment data (in GeV) of $\rho$ meson and its excitations from
PDG2007 \cite{PDG2007}.}
\label{data}
\end{table}

\subsection{Black Hole Thermodynamics}

Using the black hole solution we obtained in the previous section
\begin{equation}
ds^{2}=\dfrac{e^{2A\left(  z\right)  }}{z^{2}}\left[  -g(z)dt^{2}+\frac
{dz^{2}}{g(z)}+d\vec{x}^{2}\right]  ,
\end{equation}
it is easy to calculate the Hawking-Bekenstein entrop
\begin{equation}
s=\dfrac{e^{3A\left(  z_{H}\right)  }}{4z_{H}^{3}}, \label{entropy
\end{equation}
and the Hawking temperatur
\begin{equation}
T=\dfrac{z_{H}^{3}e^{-3A\left(  z_{H}\right)  }}{4\pi\int_{0}^{z_{H}
y^{3}e^{-3A\left(  y\right)  }dy}\left[  1-\dfrac{2c\mu^{2}\left(
e^{cz_{H}^{2}}\int_{0}^{z_{H}}y^{3}e^{-3A\left(  y\right)  }dy-\int_{0
^{z_{H}}y^{3}e^{-3A\left(  y\right)  }e^{cy^{2}}dy\right)  }{\left(
1-e^{cz_{H}^{2}}\right)  ^{2}}\right]  . \label{temperature
\end{equation}
To continue, we need to fix the parameter $b$ in\ the warped factor (\ref{A})
for our black hole background.

We will fix the parameter $b$ by fitting the phase transition temperature
$T_{0}$\ at the vanishing chemical potential obtained from lattice QCD. It is
well known that, for QCD with quark mass, the phase transition becomes a
crossover at low chemical potential. There is no realizing order parameter to
describe a crossover. Nevertheless, we can define a quasi-transition
temperature by looking at a rapid change for certain observable. In
\cite{1403.1179}, the authors argued that the quasi-transition temperature for
a crossover is not uniquely defined and therefore depends on the observable
used to define it. Basically any observable that exhibits a non-differentiable
behavior at the critical temperature can be used to define the
quasi-transition temperature at a crossover. It is not surprised that the
quasi-transition temperature changes with the observable used to define it. In
this case, people use the transition region \cite{1005.3508}, in which
different observable may have their characteristic points at different
temperature values. Since the temperature dependencies of the various
observable play a more crucial role than any single quasi-transition
temperature value, we will use the speed of sound to define the
quasi-transition temperature in this paper. The speed of sound is defined a
\begin{equation}
c_{s}^{2}=\dfrac{\partial\ln T}{\partial\ln s}.
\end{equation}
At $\mu=0$, the Hawking temperature (\ref{temperature}) reduces t
\begin{equation}
T\left(  z_{H}\right)  =\dfrac{z_{H}^{3}e^{-3A\left(  z_{H}\right)  }
{4\pi\int_{0}^{z_{H}}y^{3}e^{-3A\left(  y\right)  }dy},
\end{equation}
and the speed of sound become
\[
c_{s}^{2}=\dfrac{z_{H}^{4}e^{-3A\left(  z_{H}\right)  }}{3\left[
1-z_{H}A^{\prime}\left(  z_{H}\right)  \right]  \int_{0}^{z_{H}
y^{3}e^{-3A\left(  y\right)  }dy}-1.
\]
In FIG. \ref{csb}, we plot the squared speed of sound v.s. temperature at
vanishing chemical potential for several values of parameter $b$ in the warped
factor (\ref{A}). We can see that, for each curve, there is a rapid change at
a temperature around $150\sim200MeV$, which we can use to define the
quasi-transition temperature $T_{0}$\ of the crossover at $\mu=0$. For
different values of the parameter $b$, quasi-transition temperature $T_{0}$,
i.e. the position of the minimum value,\ changes as shown in FIG. \ref{csb}.
By taking the commonly used value $T_{0}\approx170MeV$, we can fix the
parameter as $b=-6.25\times{10}^{-4}GeV^{4}$.

\begin{figure}[h]
\begin{center}
\includegraphics[
height=2in,
width=3in
]{csb1.eps}\hspace*{0.5cm} \includegraphics[
height=2in,
width=2.9in
]{csb2.eps}\vskip -0.05cm \hskip 0.15 cm \textbf{( a ) } \hskip 7.5 cm
\textbf{( b )}
\end{center}
\caption{The squared speed of sound vx
.s. temperature at $\mu=0$ for different
values of parameter $b$. Curves from top to bottom correspond to
$b=-0.0005,-0.0007,-0.0009,-0.0011GeV^{4}$. We enlarge a rectangle region in
(a) into (b) to see the detailed structure. For different values of the
parameter $b$, the corresponding quasi-transition temperature $T_{0}$, i.e.
the position of the minimum value,\ changes.
\label{csb
\end{figure}

\subsection{Phase Diagram}

For different chemical potentials, the temperature dependence on the horizon
$z_{H}$ is showed in FIG. \ref{T}. For vanishing or small chemical potential
$0\leq\mu\leq\mu_{c}=0.23148GeV$, the temperature decreases monotonously to
zero; while for $\mu>\mu_{c}$, the temperature bends up and goes down again to
zero. Therefore, for certain range, the same temperature corresponds to three
different horizons as indicated in (b) of FIG. \ref{T}. This temperature
behavior implicates that a phase transition happens at certain temperature for
$\mu>\mu_{c}$.

\begin{figure}[h]
\begin{center}
\includegraphics[
height=2in,
width=3in
]{T1.eps}\hspace*{0.5cm} \includegraphics[
height=2in,
width=2.9in
]{T2.eps}\vskip -0.05cm \hskip 0.15 cm \textbf{( a ) } \hskip 7.5 cm \textbf{(
b )}
\end{center}
\caption{The temperature v.s. horizon at different chemical potentials
$\mu=0,0.15,0.231,0.3GeV$. We enlarge a rectangle region in (a) into (b) to
see the detailed structure. For $0<\mu<\mu_{c}$, the temperature decreases
monotonously to zero; while for $\mu>\mu_{c}$, the temperature has a local
minimum. At $\mu_{c}\simeq0.231GeV$, the local minimum reduces to a inflection
point.
\label{T
\end{figure}

To determine the thermodynamically stability, we plot specific heat $C_{V}$
v.s. temperature $T$ in FIG. \ref{C}, where the specific heat $C_{V}$ is
defined a
\begin{equation}
C_{V}=T\left(  \dfrac{\partial s}{\partial T}\right)  _{\mu}.
\end{equation}

\begin{figure}[h]
\begin{center}
\includegraphics[
height=2in,
width=3in
]{Cv1.eps}\hspace*{0.5cm} \includegraphics[
height=2in,
width=2.9in
]{Cv2.eps}\vskip -0.05cm \hskip 0.15 cm \textbf{( a ) } \hskip 7.5 cm
\textbf{( b )}
\end{center}
\caption{The specific heat v.s. temperature at different chemical potentials
$\mu=0,0.15,0.231,0.3GeV$. We enlarge a rectangle region in (a) into (b) to
see the detailed structure. For $0\leq\mu\leq\mu_{c}$, the specific heat is
always positive, $C_{V}>0$ implies that the black hole with any temperature is
thermodynamically stable. While for $\mu>\mu_{c}$, $C_{V}$ could be negative
for a range of $T$ where the black hole is thermodynamically unstable.
\label{C
\end{figure}

In the $C_{V}-T$ diagram, the negative value of the specific heat corresponds
to the thermodynamically instability. For $0\leq\mu\leq\mu_{c}$, the specific
heat is always positive. $C_{V}>0$ implies that the black hole with any
temperature is thermodynamically stable. While for $\mu>\mu_{c}$, $C_{V}$
could be negative for a range of $T$ where the black hole is thermodynamically
unstable. Thus one of the three horizons corresponding to the same temperature
is thermodynamically unstable and the black hole would never take that state.
However, there still left two horizons which are both thermodynamically stable
and are possible realistic states. To determined which one is physically
preferred out of the two thermodynamically stable states, we need to compare
their free energies.

The first law of thermodynamics in a grand canonical ensemble can be written
as
\begin{equation}
F=U-Ts-\mu\rho,
\end{equation}
where $U$ is the internal energy of the system and $F$ is the corresponding
free energy. Changes in the free energy of a system with constant volume are
given b
\begin{equation}
dF=-sdT-\rho d\mu.
\end{equation}
At fixed values of the chemical potential $\mu$, the free energy can be
evaluated by the integral \cite{0812.0792,1301.0385
\begin{equation}
F=-\int sdT. \label{int F
\end{equation}
Directly integrating shows that the absolute value of the free energy goes to
infinity and needs to be regularized. However, since we only care about the
differences between the free energies, the absolute values of the free energy
are not important for our analysis. Thus we can simply regularize the free
energy by fixing the integration constant in the above integral (\ref{int F}).
Considering the vanishing chemical potential case, we set the free energy at
the quasi-transition temperature $T_{0}\approx170MeV$ to be zero. By
requesting $F\left(  T_{0}\right)  =0$ at $\mu=0$, we finally are able to
calculate the free energy a
\begin{equation}
F=\int_{z_{H}}^{z_{H}\left(  T_{0}\right)  }s\dfrac{dT}{dz_{H}}dz_{H}.
\label{F
\end{equation}
The free energy $F$\ v.s. temperature $T$ and the phase diagram are plotted in
FIG. \ref{phase}.

\begin{figure}[h]
\begin{center}
\includegraphics[
height=2in,
width=3in
]{F.eps}\hspace*{0.5cm} \includegraphics[
height=2in,
width=3in
]{phase.eps}\vskip -0.05cm \hskip 0.15 cm \textbf{( a ) } \hskip 7.5 cm
\textbf{( b )}
\end{center}
\caption{The free energy v.s. temperature at different chemical potentials
$\mu$ is plotted in (a) and the phase diagram in $T$ and $\mu$ plane is
plotted in (b). For $0\leq\mu\leq\mu_{c}$, the free energies are single-valued
and smooth, the system undergoes a crossover. While for $\mu>\mu_{c}$, the
free energies become multi-valued and take swallow-tailed shapes with a
first-order phase transition happens at the self-crossing point. At $\mu
=\mu_{c}$, the free energy curve is single-valued but not smooth. A
second-order phase transition happens at the non-smooth point $\left(  \mu
_{c},T_{c}\right)  \simeq\left(  231MeV,121MeV \right)  $, which is the
critical point where the phase transition mildens to a crossover.
\label{phase
\end{figure}

As we expected, for $0\leq\mu\leq\mu_{c}$, the free energies are always
single-valued; while for $\mu>\mu_{c}$, the free energies become multi-valued
and take swallow-tailed shapes. A first-order phase transition happens at the
self-crossing point of each free energy curve with a fixed chemical potential.
At $\mu=\mu_{c}$, the free energy curve is continues but not smooth. A
second-order phase transition happens at the non-smooth point, which is the
critical point where the phase transition mildens to a crossover.

\subsection{Equations of State}

FIG. \ref{cs-T} plots the squared of speed of sound $c_{s}^{2}$ v.s. the
temperature $T$ for different chemical potentials.

\begin{figure}[h]
\begin{center}
\includegraphics[
height=2in,
width=3in
]{cs1.eps}\hspace*{0.5cm} \includegraphics[
height=2in,
width=2.9in
]{cs2.eps}\vskip -0.05cm \hskip 0.15 cm \textbf{( a ) } \hskip 7.5 cm
\textbf{( b )}
\end{center}
\caption{The squared speed of sound v.s. temperature at different chemical
potentials $\mu=0,0.15,0.231,0.3GeV$. We enlarge a rectangle region in (a)
into (b) to see the detailed structure. For $0<\mu<\mu_{c}$, the speed of
sound behaves as a smooth crossover. At the critical point $\mu=\mu_{c}$, a
second order phase transition happens where $c_{s}^{2}$ goes to $0$ at the
critical temperature $T_{c}$. For $\mu>\mu_{c}$, the squared of speed of sound
undergoes a first order phase transition at the self-crossing point. At high
temperature, $c_{s}^{2}$ approaches the conformal limit $1/3$ as expected.
\label{cs-T
\end{figure}

For $0<\mu<\mu_{c}$, the speed of sound behaves as a sharp but smooth
crossover. At the critical point $\mu=\mu_{c}$, a second order phase
transition happens where $c_{s}^{2}$ goes to $0$ at the critical temperature
$T_{c}$. For $\mu>\mu_{c}$, the squared of speed of sound becomes negative,
i.e. the speed of sound is imaginary, for a range of temperature. The
imaginary speed of sound indicates a Gregory-Laflamme instability
\cite{9301052,9404071}. This is related to the general version of Gubser-Mitra
conjecture \cite{0009126,0011127,0104071}, i.e. the dynamical stability of a
horizon is equivalent to the thermodynamic stability. In our system, the
negative specific heat implies thermodynamically unstable. While the imaginary
speed of sound implies the amplitude of the fixed momentum sound wave would
increase exponentially with time, reflecting the dynamical instability.
Roughly speaking, $C_{V}<0$ is equivalent to $c_{s}^{2}<0$ in our system. In
all the case, $c_{s}^{2}$ approaches the conformal limit $1/3$ at very high
temperature as expected.

We plot equations of state for entropy in FIG. \ref{S}. For $0<\mu<\mu_{c}$,
the entropy is single-valued and there is no phase transition. For $\mu\geq
\mu_{c}$, the entropy is multi-valued for a region of temperature which
indicates a phase transition between high entropy and low entropy black holes.
The similar phase behaviors have been discussed in \cite{0804.0434} for a
holographic QCD model with different values of parameters tuned by hand.

\begin{figure}[h]
\begin{center}
\includegraphics[
height=2in,
width=3in
]{s1.eps}\hspace*{0.5cm} \includegraphics[
height=2in,
width=2.9in
]{s2.eps}\vskip -0.05cm \hskip 0.15 cm \textbf{( a ) } \hskip 7.5 cm \textbf{(
b )}
\end{center}
\caption{The entropy v.s. temperature at different chemical potentials
$\mu=0,0.15,0.231,0.3GeV$. We enlarge a rectangle region in (a) into (b) to
see the detailed structure. For $0<\mu<\mu_{c}$, the entropy is single-valued
and there is no phase transition. For $\mu\geq\mu_{c}$, the entropy is
multi-valued for a region of temperature which indicates a phase transition
between high entropy and low entropy black holes.
\label{S
\end{figure}

The pressure $p=-F$ and the energy $\epsilon=F+sT$ can be
calculated from the free energy and are plotted in FIG. \ref{EoS}. We see that both pressure and energy increases with the chemical potential, that pushes the
phase transition temperature to the smaller values for growing $\mu$. Our
results are consistent to the recent lattice results with finite chemical
potential \cite{1204.6710}.

\begin{figure}[h]
\begin{center}
\includegraphics[
height=2in,
width=3in
]{p1.eps}\hspace*{0.5cm} \includegraphics[
height=2in,
width=2.9in
]{E1.eps}\vskip -0.05cm \hskip 0.15 cm \textbf{( a ) } \hskip 7.5 cm
\textbf{( b )}
\end{center}
\caption{The equations of state at different chemical potentials
$\mu=0,0.15,0.231,0.3GeV$. The pressure v.s. temperature is plotted in (a) and
the energy v.s. temperature is plotted in (b).
\label{EoS
\end{figure}

We finally plot the trace anomaly $\epsilon-3p$
v.s $T$ in FIG. \ref{TA}. With the growing chemical potential
$\mu$, the peak of trace anomaly decreases. From (b) in FIG. \ref{TA}, we clearly see that, for $0<\mu<\mu_{c}$, the trace anomaly is single-valued
with finite slope through all the curve. For $\mu\geq\mu_{c}$, the slope of the trace anomaly becomes infinite at the certain temperature indicating a phase transition happened there.

\begin{figure}[h]
\begin{center}
\includegraphics[
height=2in,
width=3in
]{TA1.eps}\hspace*{0.5cm} \includegraphics[
height=2in,
width=2.9in
]{TA2.eps}\vskip -0.05cm \hskip 0.15 cm \textbf{( a ) } \hskip 7.5 cm
\textbf{( b )}
\end{center}
\caption{The trace anomaly v.s. temperature at different chemical potentials
$\mu=0,0.15,0.231,0.3GeV$. We enlarge a rectangle region in (a) into (b) to
see the detailed structure. For $0<\mu<\mu_{c}$, the trace anomaly is single-valued
with finite slope through all the curve. For $\mu\geq\mu_{c}$, the slope of the trace anomaly becomes infinite at the certain temperature indicating a phase transition happened there.
\label{TA
\end{figure}

\setcounter{equation}{0}
\renewcommand{\theequation}{\arabic{section}.\arabic{equation}}

\section{Conclusion}

In this paper, we studied a Einstein-Maxwell-dilaton system with a dilaton
potential. We consistently solved the equations of motion of the system by the
potential reconstruction method. A family of analytic black hole solutions is
obtained. We then carefully studied the thermodynamic properties of the black
hole backgrounds. We computed the free energy to get the phase diagram of the
black hole backgrounds. In its dual holographic QCD theory, we are able to
realized the Regge trajectory of the vector mass spectrum by fixing the gauge
kinetic function. We then calculated the equations of state in our holographic
QCD model. We found that our dynamical model captures many properties in the
realistic QCD. The most remarkable feature of our model is that, by changing
the chemical potential, we are able to see the conversion from the phase
transition to a crossover dynamically. We identified the critical point in our
holographic QCD model and calculated its value with $\left(  \mu_{c
,T_{c}\right)  \simeq\left(  0.231GeV,0.121GeV \right) $. As the authors
knowledge, our model is the first holographic QCD model which could both
dynamically describe the transformation from the phase transition to the
crossover by changing the chemical potential and realize the linear Regge
trajectory for the meson spectrum.

There are many future directions are worth to be studied. For example, one can
introduce a open string in the black hole background and compute the linear
quark-antiquark potential and expectation value of Polyakov loop to
incorporate the confinement-deconfinement phase transition. One can also
compute the various transport coefficients like shear viscosity, bulk
viscosity and so on. It is also interesting to compute the critical exponents
of various physical quantities near the critical point. Some of these issues
are in progress.

\begin{acknowledgments}
We would like to thank Mei Huang, Xiao-Ning Wu for useful discussions. This
work is supported by the National Science Council (NSC 101-2112-M-009-005) and
National Center for Theoretical Science, Taiwan.
\end{acknowledgments}

redpajama_set_name: RedPajamaArXiv


text:
Peace Activist Kathy Kelly: Yemenis Are Facing Twin Terrors of Aerial Bombings and Starvation
Web ExclusiveApril 17, 2017
co-coordinator of Voices for Creative Nonviolence.
The United Nations is warning the risk of mass starvation is rapidly rising in Yemen, Nigeria, Somalia and South Sudan. This comes as the U.S. escalates its involvement in the Saudi-led war on Yemen. We speak to Kathy Kelly, co-coordinator of Voices for Creative Nonviolence, a campaign to end U.S. military and economic warfare. She and over a dozen other peace activists recently held a week-long vigil and fast in front of the United Nations to protest the ongoing U.S. support for the Saudi bombing of Yemen and the Saudi blockade of Yemeni ports.
StorySep 17, 2020A Crisis Made in America: Yemen on Brink of Famine After U.S. Cuts Aid While Fueling War
AMY GOODMAN: This is Democracy Now!, democracynow.org, The War and Peace Report. I'm Amy Goodman. The United Nations is warning the risk of mass starvation is rapidly rising in Yemen, Nigeria, Somalia and South Sudan. On Wednesday, U.N. spokesperson Adrian Edwards said a preventable humanitarian catastrophe is "fast becoming an inevitability."
ADRIAN EDWARDS: The risk of mass deaths from starvation among populations in the Horn of Africa, in Yemen and Nigeria, is growing. This warning is in light of the drought situations that you've been hearing about, that are also affecting many neighboring countries, and a funding shortfall that has become so severe that an avoidable humanitarian crisis in the region, possibly worse than that in the case of the Horn of Africa of 2011, is fast becoming an inevitability.
AMY GOODMAN: Earlier this year, the U.N. appealed for $4.4 billion to prevent famine, but has received only about one-fifth of those funds. The U.N. warning came as a group of 55 U.S. lawmakers wrote to President Trump warning the president needs congressional approval if he seeks to expand U.S. support for the Saudi-led bombing campaign and blockade of Yemen.
For more, we continue our conversation with Kathy Kelly, coordinator of the Voices for Creative Nonviolence, a campaign to end U.S. military and economic warfare. Kathy Kelly has been nominated for a Nobel Peace Prize twice. She is among 20 peace activists who are on day five of a week-long vigil and fast in front of the United Nations to protest the ongoing U.S. support for the Saudi bombing of Yemen and the Saudi blockade of Yemeni ports.
We continue this conversation, Kathy. We began by talking about what the Pentagon has called "The Mother of All Bombs," the largest bomb, non-nuclear bomb, ever dropped in the world. The U.S. just dropped it in Afghanistan. And now we're going to why you're in front of the U.N. Talk about your fast.
KATHY KELLY: Well, this fast originated, I think, because some of us who had seen President Trump's address to the Congress, in which he gave a great tribute to a Navy SEAL officer, Chief Petty Officer Ryan Owen, who had been killed, and there was a four-minute standing ovation with applause for the widow of that man—never mentioned in what country he was killed. And had there been any context, had the country been mentioned—it was Yemen—had there been any context whatsoever, I don't think people could have possibly stood up and applauded this situation. It's a horrific situation that's unfolding in Yemen.
And the United States' response has been one of militarism, support for the Saudi blockade of the vital port of Hodeidah, support for Saudi airstrikes, which have already taken out five cranes essential for the food to be imported into Yemen, and the United States itself waging airstrikes within Yemen. And, you know, we felt that this was so similar to what we had seen in Iraq when a state of siege primarily afflicted children and led to the deaths of hundreds of thousands of children under the age of five. And as was the case in Iraq, they were importing 90 percent of their food before the United States insisted on the maintenance of this 13-year blockade. Well, in Yemen, that port, Hodeidah, alone, is the entry for 70 percent of the food for the country. And Yemen imports 90 percent of its food.
So when you have a denial of not only food, but also gasoline, the means to transport food, people are running out of water—I mean, Iona Craig bravely reported that refugees, trying to find their way to a place where they might receive aid, were actually eating the trees. And when they got to where they thought they were going, there was no humanitarian aid, there was no water, there was no food. And so, children are dying of preventable diseases, dying of hunger, dying of thirst.
We've seen that the United Nations has said there's got to be attention paid to this preventable near-famine condition. And our president has slashed the budgets that would have possibly given some of the needed assistance. And we can't cooperate with this, so we're on a fast. You know, we're simply six days of going without food, knowing that we're reflecting on the reality for people who have gone for months and face the terror, the real terror, that they could be bombed and die that way, or they could be starved.
AMY GOODMAN: We have a situation right now where the—where the Trump administration has announced a massive increase in the military budget, over $50 billion, and at the same time a massive slashing of the State Department budget, which would supposedly, you know, pursue nonmilitary approaches to conflicts, and aid organizations, as well.
KATHY KELLY: And so, we think—you know, people say they want security and are so anxious about security for people within the United States. But we've long believed that our security is founded in, based in, being able to extend a hand of friendship to other countries and share resources, and not continue to bloat the coffers of one of the greediest, most dangerous institutions in the world. And that's, of course, the United States military and the Pentagon, and the military-industrial complex, all of the corporate groups that are experiencing great rises in their stocks. You know, 59 Tomahawk cruise missiles produced by Raytheon get launched, and Raytheon stocks go up. This is the kind of thing that enrages other people all around the world.
AMY GOODMAN: Have you been to Yemen?
KATHY KELLY: I haven't. I've had so much respect for the bravery of people like Iona Craig, reporting for The Intercept and the Pulitzer Foundation. You know, we, in some ways, have wondered, would there be any possibility to go into Yemen or to, in some way, accompany people in that very, very, very dangerous waterway. Forty-two Somalis were recently attacked and killed by an Apache helicopter. And we shouldn't limit our imagination, but at this moment our accompaniment has really been through trying to pay attention and speak up.
AMY GOODMAN: You mentioned the U.S. military attack in Yemen on January 29th that killed, it's believed, about 29 people, more than half of them women and children. This is the attack that President Trump mentioned in his address to the joint session of Congress and had the widow of Ryan Owens there, who was the U.S. Navy SEAL who was killed. His father, William Owens, refused to greet President Trump at Dover Air Base, because he was so enraged at this catastrophic raid that his son was sent on and killed. The U.S. military presence in Yemen, can you talk about when we know about casualties and when we don't? We certainly knew about the terrible tragedy of Ryan Owens, but rarely the mention of the Yemeni casualties.
KATHY KELLY: Well, the parlance for the drone operators after a strike is to speak of those who run away, who might be survivors, as "squirters."
AMY GOODMAN: As what?
KATHY KELLY: Squirters.
AMY GOODMAN: Squirters?
KATHY KELLY: Squirters. And then there's an effort to attack those people. And so, I think about the description that Iona Craig gave of a family that heard the explosion, and the mother tried to bundle up her children and run. And then, she and her children were among the casualties. And these night raids are enormously terrifying for people. I mean, some of the most professional warriors in the world, armed with heavy-duty weaponry, burst into homes. And it turned out in this case that the fighters in the region thought, at first, that this was an attack from a hostile tribe. Then they realized, with the planes overhead, that this was indeed the United States or Saudi Arabia. But they fought back, and I guess a helicopter was destroyed. But the lives of people in that area are put in such jeopardy, and people will feel fear and trauma for the rest of their lives. I mean, war isn't over when it's over. And this, of course, raises the likelihood that others will say, "Well, we're going to find guns, pick up guns, be paid to carry guns."
AMY GOODMAN: Democratic Senator Chris Murphy has repeatedly called for an end to U.S. support of the Saudi-led bombing campaign in Yemen. Last month, he tweeted, "The U.S. role in the Yemen civil war has created a famine. What horror. It's time for us to realize it's within our control to stop this." Speaking to CNN last year, Senator Murphy said the U.S. was complicit in the death of every Yemeni civilian.
SEN. CHRIS MURPHY: There is an American imprint on every civilian life lost in Yemen. Why? Well, it's because though the Saudis are actually dropping the bombs from their planes, they couldn't do it without the United States. It's our munitions, sold to the Saudis. It's our planes that are refueling the Saudi jets. And it's our intelligence that are helping the Saudis provide their targeting. We have made a decision to go to war in Yemen against a Houthi rebel army that poses no existential threat to the United States. It's really wild to me that we're not talking more about this in the United States. The United States Congress has not debated a war authorization giving the president the power to conduct this operation in Yemen.
AMY GOODMAN: Senator Murphy went on to say Congress can put an end to arms sales to Saudi Arabia.
SEN. CHRIS MURPHY: Congress may have a chance to weigh in, in September, because the Saudis need more bombs, and so they need the Congress to reauthorize a new sale of weapons. So Congress can step in and say enough is enough.
AMY GOODMAN: Senator Murphy also said the perception in Yemen is that the United States is responsible for the war, not Saudi Arabia.
SEN. CHRIS MURPHY: If you talk to Yemenis, they will tell you that inside Yemen, this is not perceived to be a Saudi bombing campaign, this is perceived to be a U.S. bombing campaign. What's happening is that we are helping to radicalize the Yemeni population against the United States.
AMY GOODMAN: Again, that is Senator Murphy of Connecticut. And I do want to point out, he made these comments during the Obama years. This is in August of last year. Kathy Kelly?
KATHY KELLY: So it's really not acceptable to say that our main goal would be that the Congress be given the chance to authorize these kinds of strikes, because we think it's very possible that this Congress would authorize the strikes. We want to say that there has to be a silencing of all guns, that the United States shouldn't pick any side in this terrible civil war. The United States should end all military aid to Saudi Arabia and end its own military strikes against Yemen.
AMY GOODMAN: Finally, Kathy, people might not realize that you haven't eaten for days now. I mean, it's been five days. Talk about the group that is engaging in this hunger fast to end militarism against Yemen.
KATHY KELLY: Well, across from the United Nations every day, people have donned the papier-mâché masks and black gowns that some of these people were wearing in 2001, when the United States first invaded Afghanistan. We're joined by Catholic Workers, by CodePink activists, by Veterans for Peace, by people with Pax Christi, by many people who have made a long-standing commitment to end wars. We were so glad to greet people from Okinawa who came to join us on our first day. Yemenis have turned out regularly, as well. And so, we have a huge responsibility to try to connect different groups across the country. In Washington, D.C., CodePink people and friends went to the ambassador from Yemen's office and delivered a letter, had a two-hour conversation with him. These are initial steps. And we acknowledge it's too little and too late for many people in Yemen, but it doesn't excuse us from the responsibility to try, and, of course, to connect the dots with the massive bombing in Afghanistan today.
AMY GOODMAN: Kathy Kelly, co-coordinator of Voices for Creative Nonviolence, a campaign to end U.S. military and economic warfare, among 20 peace activists who are on day five of their week-long vigil and fast in front of the United Nations to protest the ongoing U.S. support for the Saudi bombing of Yemen and the Saudi blockade of Yemeni ports. Kathy Kelly has just returned from Afghanistan.
This is Democracy Now! To see Part 1 of our conversation, go to democracynow.org. I'm Amy Goodman. Thanks for joining us.
A Crisis Made in America: Yemen on Brink of Famine After U.S. Cuts Aid While Fueling War
StorySep 17, 2020

redpajama_set_name: RedPajamaCommonCrawl


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"The Nutcracker" tells the story of young Clara, who receives a nutcracker as a gift during a Christmas Eve celebration.
Later that night the nutcracker comes to life and defeats the evil Rat King in battle.
The Nutcracker turns into a prince and takes Clara on a journey to the Land of Snow, an enchanted forest wonderland, and then to the magical Land of Sweets, where they are greeted by the Sugar Plum Fairy.
Characters from both of these entrancing lands perform a variety of dances.
In the end, Clara awakens from her dream and finds herself back home by her Christmas tree with her beloved nutcracker.
The ballet features some of the most famous music by 19th century Russian classical composer Pyotr Tchaikovsky.


They won't pinch you and you won't find them on the beach. The name of the new radio-frequency crab cavities has nothing to do with their appearance and is merely illustrative of the effect they will have on circulating proton bunches.
Crab cavities will help increase the luminosity of collisions in the High-Luminosity LHC (HL-LHC) – the future upgrade of the LHC planned for after 2025. The luminosity of a collider is proportional to the number of collisions that occur in a given amount of time. The higher the luminosity, the more collisions, and the more data the experiments can gather to allow them to observe rare processes.
At present, two superconducting crab cavities have been manufactured at CERN and inserted into a specially designed cryostat, which will keep them at their operating temperature of two kelvin. Currently in their final stages of testing, they will be installed in the Super Proton Synchrotron (SPS) during this year's winter technical stop. In 2018, they will be tested with a proton beam for the first time.
The beams in the LHC are made of bunches, each containing billions of protons. They are similar to trains with carriages full of billions of passengers. In the LHC, the two counter-circulating proton beams meet at a small crossing angle at the collision point of the experiments.
What makes the crab cavities special is their ability to "tilt" the proton bunches in each beam, maximising their overlap at the collision point. Тhis way every single proton in the bunch is forced to pass through the whole length of the opposite bunch, which increases the probability that it will collide with another particle. After being tilted, the motion of the proton bunches appears to be sideways – just like a crab.
Find out more about the crab cavities in the video below.


text:
Home > General > Top 10 Startups most valuable in the world
Top 10 Startups most valuable in the world
Top 10 Startups were established in the United States, two in Asia, and India.
Top 10 Startups – Uber (USA) – $ 51 billion
It is the currently best-ranked startup in the world, with $ 51 billion. The company was founded in 2009 when the company's current CEO, Travis Kalanick, and Jarrett Camp developed an app that connects riders with motorists who wanted to provide transportation services for a fee.
Top 10 Startups – The first people who had the opportunity to try the app were residents of the American city of San Francisco, who immediately fell in love with the service. The Uber app is used in more than 63 countries worldwide, and the service is available in more than 270 cities. Over time, Uber has come under fire for launching in many towns worldwide without taxi legislation. This is not the biggest problem Uber faces, as it was the most severe accident involving the company in India, where a company driver raped a customer.
The service has been banned in several cities in the United States, Europe, parts of China, India, and Thailand. However, in the last eight months of this year, Uber's value increased by $ 10 billion.
Top 10 Startups – Xiaomi (Asia) – $ 46 billion
In just four years since its launch, it has become the largest smartphone supplier from China. In fact, in December 2014, the company won the title of the world's most valuable startup and removed Uber from the throne in July 2015, according to the latest estimates.
Founder and CEO Lee Jun contributed greatly to the company's popularity by borrowing the product offering's aesthetics from late Apple founder Steve Jobs.
"Modern technology should not cost a fortune," this is Li Jun's mainline in business, a principle that we also find in the description of the company on the official website.
Top 10 Startups – Xiaomi introduces smart mobile devices with software and hardware specifications similar to those of major manufacturers. The company has also built a good reputation among users because it created a habit of updating the interface software that the devices were equipped with, taking into account the suggestions of buyers coming from social networks.
Top 10 Startups – Airbnb (USA) – $ 25.5 billion
In October 2007, Brian Cesky and Joe Gibia rented their apartment from San Francisco for one night. This experience brought them into contact with Nathan Blecharczyk, which helped them create an online platform that connects homeowners with enthusiastic travelers looking for cheap housing. According to airbnb.com, as of August 2008, more than 60 million users have managed to find a host in more than 34 thousand cities in more than 190 countries even though the platform.
Top 10 Startups – Hotel owners ignored this application in its early days. Still, now hotel groups are trying to stop the expansion of the emerging company under the pretext of public safety, and some are violating the regulations of some residential areas and long-term rental offers.
The company's estimated value increased by 255% from January to July, when the last estimate was made.
Top 10 Startups – Palantir (USA) – $ 20 billion
It is an American company specialized in analyzing, interpreting, and representing links between information. And when we say information, you can think of phone numbers, email addresses, bank accounts, car numbers, and any other data packages of this kind.
The company's technology foundations were laid in Pay Pal, an online payment platform that engineers have used to analyze web links to see how the network has performed. PayPal executives Joe Lonsdale and Peter Thiel founded the company in 2004 with Alexander Karp, the current and sole CEO of Palantir.
Top 10 Startups – Since 2009, the United States government has expired contracts with the software manufacturer worth $ 215 million. The company's clients include the CIA, the FBI, NSA, Homeland Security, and the Department of Homeland Security. The company also helped place Bernie Madoff (known as the largest stockbroker in history) under indictment.
Several organizations defending fundamental rights and freedoms accused her of helping to establish companies in excessive surveillance.
Top 10 Startups – Snapchat (US) – $ 16 billion
In 2013, he caught the public's attention, founder Evan Spiegel, 23 at the time, who had turned down a $ 3 billion bid for his company by Facebook.
Spiegel rejected the US giant's offer, saying they had no experience managing the corporate model.
Top 10 Startups – After a night, this young man developed the Snapchat app with a friend and told him that he wished he had never sent certain messages. Thus was born an application that allows sending messages with a short life span, which the sender initially set.
According to the latest statistics published, Snapchat has around 100 million active daily users.
In 2014, the company recorded revenues of $ 3 million, which is a modest amount compared to this year's estimated revenue.
Top 10 Startups – Didi Kuaidi (Asia) – $ 16 billion
Dache and Kuaidi Dache are two of the biggest taxi apps and have decided to merge in China to form a dominant domestic market player. Didi Kwaidi secured a $ 2 billion investment from Fusion, setting a new record for funding in the Chinese startup market. The higher capital will help the company compete with Uber.
Top 10 Startups – Despite the merger of the two companies, they continue to operate individually. Over time, Americans invested nearly $ 1 billion in the Shanghai Free Trade Zone subsidiary in 2015.
Flipkart (India) – $ 15 billion
Sachin and Benny Bansal together lay the foundations for India's most large retail company using the savings they got while working in Karnataka's capital, Bangalore, for a subsidiary of the US giant, Amazon.
Entrepreneurs followed a business path similar to that of Amazon, starting by selling books online due to the low price and the least impact of shipping damage. The next step was to sell electronics into a platform where small businesses could buy large resale products.
Top 10 Startups – Flipkart followed the Amazon model, and in 2013, it began selling tablets and other portable gadgets under its brand.
The biggest challenge for Flipkart is the market it operates in. Since becoming a major retailer in India, she has been losing money every day selling products less than the purchase price.
The company has been striving to maintain its edge in the Indian market against Amazon and SnapDeal.com, the local retailer.
At the end of 2015, the Indian retailer had 22 million registered users and hosted 3,000 companies selling millions of products.
SpaceX (USA) – $ 12 billion
Exploration Technologies Corporation or SpaceX is a company from the United States specializing in the design, implementation, and development of partially or fully reusable spacecraft.
Top 10 Startups – The startup was founded in 2002 by famous businessman Elon Musk, one of the founders of PayPal. He risked a large portion of his fortune to found this company. The company was initially a private company that launched a spacecraft into space and delivered supplies to the International Space Station. To launch some missiles, the company spent $ 70 million, which means about half the spending of the US Air Force.
Pinterest (USA) – $ 11 billion
From his childhood, Ben Silberman has loved collecting everything from beetles to stamps. In 2010, this hobby was behind the creative mind in designing Pinterest, an online platform that provides every user with a virtual schedule of images, links, and videos.
It became popular in the first months after its first release among multimedia artists, after which it began to be used by interior designers.
Top 10 Startups – The platform hosts over 30 billion unique items and doubles in number every nine months. The platform is also used by large magazines, such as Elle, or retailers, such as TechCorp, who have created their collections there.
Ben Silberman and Evan Sharp currently lead one of the world's fastest-growing startups.
Dropbox Corporation (USA) – $ 10 billion
In Houston, he started developing the file-hosting platform Dropbox while on a bus ride.
IT market giants such as Microsoft, Google, and Apple have used the financial resources at their disposal to stop Dropbox's rise by offering their file hosting services at lower prices.
Top 10 Startups – Since 2012, the number of users of the company's service has tripled, and in 2015 Dropbox hosted the files of more than 300 million users.
Recent News & Activity of Top 10 Startups most valuable in the world
Make My Day has developed an algorithm and software solution designed to optimize route planning and car charging for EV drivers and fleets. The company operates
Kemtai provides a personalized home fitness solution that is capable of actually seeing and guiding users users through their workout as though a personal trainer


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College Football Recap, Week 14
By zanthrax54, December 3, 2019 in The Rick Serafin Buffalo Sports & Political Forum
zanthrax54 9,067
Sacked! By yours truly!
Photo by Tim Warner/Getty Images
Alabama waves goodbye to the College Football Playoffs
College football's final week of the regular season—a.k.a. rivalry week—has come and gone with only the conference championship games and bowl games left on the schedule. It was an entertaining finale, with several of the top teams continuing to roll with the exception being Alabama, who was upset by No. 15 Auburn in what turned out to be a sloppy performance all around. Meanwhile, the Bedlam game turned out just as expected, with Oklahoma coming out on top, surprisingly enough thanks to their running game.
Below are the prospects who stood out during Week 14 in the college football landscape.
CB Jeffrey Okudah (Ohio State)
Okudah most likely cemented his status as the premier cornerback of the draft by helping to limit the Wolverines' three dynamic wide receivers to less than 100 yards. Michigan quarterback Shea Patterson didn't seem afraid to target the junior cornerback, but he made them pay with two passes defensed. The only thing you can really critique him for is his effort in run defense. His effort on one particular touchdown run to the outside was a bit of a joke. Some scouts or coaches might not appreciate that.
QB Sam Ehlinger (Texas)
The junior quarterback tore the Texas Tech Red Raiders defense to shreds by putting up 49 points while passing for two touchdowns and running for another. Ehlinger is notorious for being a Josh Allen-style dual threat runner and not necessarily a dominant passer, but he threw some huge dimes against the Texas Tech secondary, leading to a big-boy 12.9 average per completion. It remains to be seen if Ehlinger will be joining this year's class of quarterback prospects, but if he makes the choice this was a fantastic game to go out on.
DE Alton Robinson (Syracuse)
Syracuse finds themselves without bowl eligibility, so their game against Wake Forest was the last game for the seniors, including Robinson. The senior pass rusher played his part with double-digit tackles to go with a sack, a tackle for loss, and another quarterback pressure. In fact, Robinson generated decent pressure all day with his usual variety of pass-rush moves. This was a disappointing season for him, as his production didn't quite match last year's effort, but with a strong Senior Bowl and this final game, he could see himself drafted in the middle to late rounds.
WR Branden Mack (Temple)
Putting up huge numbers over the UConn defense should be expected. Still, Branden Mack had five catches for 171 yards and two scores in Temple's 49-17 win. That resulted in a massive 34-yard average per catch. The deep ball seems to be Mack's calling card. I first noticed him during University of Buffalo's game against the Owls, where he was able to make some big catches against tight coverage. The junior wideout doesn't have the look of a sure-fire first rounder or anything, but if he chooses to come out for the draft he's an intriguing late-round option.
LB Isaiah Simmons (Clemson)
The junior linebacker may just be the nation's most productive and best defensive player. In Clemson's game against South Carolina, he made plays all over the field. The former safety-turned-linebacker did a little bit of everything, including sacking the quarterback, stuffing two running plays for a loss and covering dynamic wide receiver Shi Smith. It's rare to see a player with that kind of versatility. He led the Tigers defense with ten tackles, including two for a loss and that one sack.
RB Eno Benjamin (Arizona State)
Despite a slow start, Benjamin got going in the second half to finish with 168 yards and two touchdowns. He also managed to add three catches for 14 yards and held up well in pass protection, both of which will help his draft stock. Although he isn't considered to be among the absolute best at his position, it's that type of versatility that can get teams interested in him, provided he also has a good combine.
The Buffalo Bills....
:rolleyes2
REBUILDING SINCE 2000!
To Fitzpatrick, Levitre, Kelsay, Mcgee, Barnett, Wilson, Jones, Nelson, Rinehart, McIntyre, Merriman, Shepperd, Scott, White, Wanny, and Mr. Chan Gailey...
It was real, it was fun, it just wasn't REAL FUN!
NEWVILLE MUD DAWGS FEVER BABY! We might not be very good right now, but we have infinite heart! Alot like the Bills! ;) HALLA!
http://www.muddawgsfootball.com


Are you looking for Proof Reader/ Sub Editors job vacancies? Swathi Telugu Weekly, Vijayawada has advertised for recruitment of Proof Readers, Sub Editors. Go through this job post for more details.
Address: Anil Buildings, Suryaraopet, Vijayawada - 520 002.
Skills: Good Knowledge in Telugu and proof reading.
Experience: Should have experience in publishing.
Swathi Telugu Weekly, Vijayawada has advertised for recruitment of Proof Readers, Sub Editors.
Good Knowledge in Telugu and proof reading.
Should have experience in publishing.
Should have an ability to select stories, novels etc.
For application details visit website: http://www.indiastudychannel.com/jobs/ViewJob.aspx?JobId=322944.
Published media: Eenadu Newspaper, Andhra Pradesh Edition, page no. 11, dated 26th September 2014.
It is the largest Circulated Telugu Weekly.
Are you looking for Accountant job vacancies? Swathi - The largest Circulated Telugu Weekly, Vijayawada has advertised for recruitment of Accountants. Go through this job post for more details.
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My wife and I have shot about 300 rounds through our sp238's without a single issue. We actually used this ammo to qualify for our renewal of our concealed carry.
This is my go to range ammunition of choice. I use it almost exclusively. It's not the cheapest but who cares it's quality at it's best. It makes for excellent targeting in my Ruger LCP II.
I have used 300 rounds of PMC .380 in my Sig. I have not had a FTE or FTF so far. The ammo is clean and I love the speed and customer service of Lucky Gunner. Will order again!!!!
Glock 42 guys who say they have problems with this ammo: check the back of your magazines and see if the have an 01 or 02 or 03 at the bottom. If it is an 01 or 02, send your magazines back to Glock and get the 03 magazines. They will exchange them at no charge to you. If you have the 03 mags, PMC will work fine with your Glock 42. Get the 03 mags no matter what ammo you shoot.
Lucky Gunner is a good find for me and this PMC ammo is real value.
I've purchased several times from Lucky Gunner and have been impressed each time. Ammo is clean, shipping is quick and on time, priced comparable to other sites and fires good. Thanks Lucky Gunner!
I bought this quantity a year ago or so and now it's my range ammo of choice. The price was good back then so I've been using it quite frequently. Thanks Lucky Gunner for one of my better deals.
Great product, I have used the PMC Bronze for years, as noted above I have had zero issues with this round in my G42 , (that said I use this for practice/plinking mostly and run Precision One 90grn XTP +P for SD in my 42 which has been tweaked with lighter trigger, polished and throated, SOP for all my SA pistols) and other 380s from Colts to no-name ones belonging to others that sometimes bring them by for TLC. Lucky Gunner is a terrific seller IMHO, I always get prompt delivery and well packaged (as the shippers it appears are apt to toss it from state to state, it appears sometimes) and love the fact that I know whether it is in stock before ordering. Thanks LG, for when I'm looking for ammo, I always check here first and unless I find it cheaper elsewhere, as Arnold says, "I'll be Back".
Great Price for a great product!!!
If you are looking for a larger quantity of ammo for a great price, look no further. I use this ammo in Sig P238 and have never had a problem. Outstanding training ammo and highly recommend for its reliability.
I've used this ammo in the past and had no problems at all. Great place to buy ammo at a great price.
Very accurate, good price, as always fast delivered.
The pricing is good. I use it in my Glock 42 and in another .380. With the Glock I have had some hang ups, but I think it is not the fault of the ammo. Will buy from Lucky Gunner again. Thanks.
I have had no problems and gun shoots well with this ammo. I use at the indore range in a Ruger LCP.
Have used this in 2 different guns and has functioned without any malfunctions. Combined with its lower cost per round than others, I believe I will get more of it when I need more of it.
Not so much in a Glock 42.
Like the previous poster (Review by JP. (Posted on 12/24/15), I too had problems with this ammo in my Glock 42. Lots of FTE. Seems the 42 likes hotter ammo. I dont think its the ammos 'fault' tho.
Buyer's remorse: Will NOT work in Glock 42!
Fantastic customer service at LG. No complaints there! Super fast shipping. Product arrived in pristine perfect condition. However, the story changes drastically when this ammunition was used in my Glock 42, Prior to purchasing this product, I had an online chat with one of the LG staff. Based on the information from that chat, I chose this ammo for range practice. I had specifically asked if 90 grain would be enough for the 42. I was assured that it would be. I headed to the range with 2 boxes (100 rounds). Without exaggeration, for every successful firing, there were 5 stovepipes and other feed failures (6 round magazine). I had with me a box of 95 grain rounds that I had purchased at the same time I purchased the Glock 42. 100% of those fired with zero problems. Now I have a case (less 2 boxes) of 90 grain .380, that serves as a very expensive door stop. Not happy about throwing away over $300 dollars. My recommendation: Do NOT purchase this ammunition... or any .380 90 grain ammunition... if you are using a Glock 42.
I just bought a Glock #42 for carry. This ammo is working great with this rather temperamental gun. this is the only ammo i found without problems.
Great product, get price, great service!
My first experience with LuckyGunner was great! Convenient, fast and value. What more could you ask for?!
Good ammo for my wife's sig. No ftf and accurate enough for her.
I have purchased 380 and 9mm from Lucky Gunner and have been very satisfied with my purchase and their service. I will be using them again for more 9mm and 223 in the next week.
Just finished shooting 100 rounds in my Glock 42. Clean and accurate. Have 900 more to go. Love this ammo.
I have tried different brands and found this to be the best for my gun. Just missed the sale price.
I will be looking for more in the future.
Ran a hundred rounds of this ammo through my brand new Glock 42. After a few feed problems in my first three mags, I realized it was my grip on the 42 that was causing the problem. No feed problems once the grip issue was corrected.
I recommend this ammo for range use, and plan to order from LuckyGunner again.
As has always been the case with Luckygunner the product was shipped on time and arrived intact. The quantity and quality were right on spot. I did not use these rounds but my wife did and she was super pleased. Great doing business with you folks. Thanks, Chris and Mike.
I got a few boxes of these for my newly bought 380 Bersa Firestorm and these have been the smoothest ammo I have tried so far. I tried 3 different ammo brands and these will be my next big purchase. Thanks Lucky Gunner!!
As usual, you provided quick delivery and a good price for fine-shooting ammo.
Fired 100 rounds with my 380bg had only two that required a second pull to fire. Burns clean, and cheap enough to shoot weekly.
I recently bought 1,000 rnds of .380 PMC as well as 9mm and .223. I continue to come back to Lucky Gunner because of the value and great service.
My wife uses this at the range for 238 and has no problems whatsoever. No matter where we look for ammo Lucky Gunner always has the price and service hands down.
You can usually save a buck a box by shooting something cheaper, but I've never had a problem with PMC. Loads, fires, and ejects without a problem. Seems to shoot cleaner than most others I've used as well.
I picked up a new Ruger LCP so I came to Lucky Gunner to buy some ammo to play with. I was surprised that the 380 cost more than the ammo for my 9mm but from what I have read that is normal.
I have shot over 150 rounds and have not had a problem.
If I keep shooting this much I will need to learn how to reload!
I have not shot any of the ammo yet, need a nother long weekend!
Shot a couple hundred rounds through my Colt Mustang 380 and S/W Bodyguard with out a hitch. Three thumbs up.
G42 preformed well with the pmc brand. I've been told that with certain amo they will jam or stove pipe. Not with this selection. I have cycled through 300 rounds flawlessly.
I've already reviewed this product but I just had to say that LuckyGunner out did themselves this time, the price was too good to pass up.
I use quite a bit of this ammo at the range and have had no problems with it. My Ruger LCP performs well with it.
Although 380 rounds are expensive from anywhere I found LuckyGunner to have the best price. The brand I purchased I have used prior. LuckyGunner is my trusted ammunition supplier and I have always found them helpful and the website easy to use. A good experience all around.
Have fired over 1000 rounds of PMC through my Sig p238 without any problems. Great target rounds at a great price. LG communicates well and ships fast. I'm buying all my ammo here now.
As always got great service and a quality product.
Prompt service and good quality.
First time I bought from Lucky Gunner. It won't be the last. No miss fires, clean burn. All around great ammo. My 2 Bersas eat them up.
Shot 250 rounds in my Bersa Thunder 380. All rounds fired without incident. Will continue to use LG as my main source for bulk ammo. Good prices with fast shipping.
Purchased for range practice, works well. I've put 300 rounds through my Colt XSP with no issues at all.
Put 200 rounds through my daughter's Bersa duotone out at Golden Pond. Feeds great, no FTF, but dirty, dirty. Clean very thoroughly after using. All in all a great value and shoots nice tight groups out to 20 yards or so.
Just bought kimber micro 380 and this was first ammo I used. 200 rounds and had 2 FTF. Cleaned gun and shot another 200 rounds with no FTF. Ammo does shoot dirty but I use it in 3 other 380's with no problem. With current lack of 380 ammo it is the best option.
Excellent service. Will definitely use Lucky again for future purchases. It would be nice to see the price of ammunition come down.
Bought a Glock 42 and was anxious to shoot lots of rounds. Although other sites were "out-of-stock", Lucky Gunner had the ammo, albeit not the most economical. I got what I wanted, exactly as advertised, even more conveniently than I anticipated. When things loosen up, I won't forget that LuckyGunner was there when I needed them!
We shoot abuot 100 rounds a week at the range. Have not had a miss fire yet.Lost a few rounds but that is another story..
No malfunctions feeding or shooting, burns clean, little fouling in a Sig Sauer P238. Fast service by LuckyGunner as always. This is a much better price than I paid several months earlier at LG so a fantastic buy.
Great ammo shot perfect out of my wifes Walther PK380 she loved it shot straight no misfires. Ended up ordering 4 more boxes.
As for LuckyGunner fast shipping no out of stock. Shipping is always cheaper when you buy a larger quantity so I always throw in a few boxes of .40 for my gun.
This ammo is very accurate with my Ruger special NRA edition. The full metal jacket is great for target work and when you get 1000 rounds you have a lot of fun.
I have a walther pp .380 i was having trouble with FTE's and if it did eject would jam the next round.Bought150 roundsof PMC bronze, problem solved!! NOT 1 jam or failure to fire.
Lucky Gunner has great service and ships quickly. I will definitely use them again!
Bought these for my sister's new Sig P238...a great round that has always been problem free.
PMC Bronze is all I use in my Kahr P380. Over 500 rounds and I've never had a misfire or fail-to-fire. Always cycles great and is relatively clean.
I felt good enough about this ammo to buy 1500 rounds of 380 Auto and 1500 rounds of 5.56mm.
Bottom line...you won't be disappointed.
Not one problem with these rounds in my Diamondback DB390. Cycled well and clean shooting too!
We also have this 380 Auto - 90 Grain FMJ - PMC - 50 Rounds ammo in stock in a smaller quantity.


You know when you have a crazy idea for a quilt and you just have to get it finished? Well, that is the story with this quilt. I have a lot to tell you about this quilt, it is something I have needed to get started for a while now, but just realized last week how it would look. So, from drawing, to piecing, to quilting, I finished a good chunk of this quilt last week. Then, my needle broke on my machine, ruining my rotary hook and I am waiting for a replacement hook to be sent overnight so I can finish this darn thing. I hope you like it, at least what you can see of it now. I will share the whole story behind this quilt when it is finished. In the meantime, I will try and finish everything else that I am supposed to be working on since I will be leaving for Sparrow Studios next Monday. Have a great week everyone.
I'm loving what I see! Have fun in Alberta!
I can't wait until my class with you next Thursday and Friday. Really looking forward to seeing your magic in person.
Wow!!! Hope your part comes ASAP so you can share with us!!
Can't wait to hear "the rest of the story!"
You need to quit posting these spectacular quilt photos, missy! You're making me drool all over my iPad and saliva voids the Apple warranty... ;-). I hope your part comes in soon. I'm dying to see the rest of this glorious quilt and read the story behind it. Travel safely.
Amazing...I am so jealous of all these ladies who are going to attend your class. Have fun!
Absolutely stunning. You are very talented.
Oh I would love just a beginning class from you! This is stunning!!


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Color of Money: We must fight to defend…
Color of Money: We must fight to defend financial fairness
By Michelle Singletary |
PUBLISHED: November 30, 2017 at 12:00 a.m. | UPDATED: August 19, 2021 at 3:18 a.m.
I am an unapologetic advocate for the Consumer Financial Protection Bureau, which was created in the wake of a crippling financial crisis that I fear is becoming a distant memory.
But we have to remember: It was not that long ago when financial institutions did some funky stuff that pushed us into the Great Recession.
Now the agency designed to protect consumers is a hot mess.
The director of the CFPB, Richard Cordray, stepped down last week, and there's been a fierce fight to see who will temporarily take his place until a permanent leader is nominated and confirmed.
President Trump appointed Mick Mulvaney as acting director, even though Mulvaney already has another day job as head of the Office of Management and Budget. Trump's motives seem clear: Weaken the agency by sending in Mulvaney, a former congressman who voted to abolish the agency.
Leandra English, who was named acting director by Cordray shortly before he left office, filed a lawsuit Sunday to stop the appointment of Mulvaney. On Tuesday, a federal judge ruled against her.
This battle for the CFPB leadership is like watching a train derailment. But make no mistake folks, we are on this train, too. It's our interests that will be tossed to the side when the train stops skidding.
If the federal judge's ruling against English stands, the CFPB under the current administration won't be what it was intended to be: a tough advocate for consumers.
Here are the two main arguments in favor of derailing the CFPB:
Businesses can't make enough money off consumers. Already Mulvaney has issued a 30-day freeze on new regulations. His reason: To make sure there isn't a "choking off" of financial services.
Think about this for a minute. Not even a week into the job and Mulvaney is putting the interests of corporations ahead of consumers.
Congress can't control the agency's budget. The CFPB funding comes from the Federal Reserve, and it was set up that way to purposefully avoid partisan meddling and influence peddling by the financial industry.
Take to Twitter, the forum we know Trump values. Use the #DefendCFPB hashtag. If you don't speak up, you will lose an important watchdog for financial fairness.
Contact Michelle Singletary: michelle.singletary@washpost.com or c/o The Washington Post, 1150 15th St. NW, Washington, DC 20071.
Michelle Singletary
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Private US Cargo Ship Launching to Space Station Today: Watch It Live
By Megan Gannon 2014-07-13T10:44:46Z Spaceflight
An Antares rocket, built by Orbital Sciences Corp., sits on the Mid-Atlantic Regional Spaceport's Launch Pad 0A at NASA's Wallops Flight Facility on July 12, a day before it is scheduled to loft the company's Cygnus spacecraft into orbit.
(Image: © NASA/Bill Ingalls)
WALLOPS ISLAND, Va. — After a series of delays, a robotic spacecraft built by the private company Orbital Sciences is counting down to launch today (July 13) on a mission to deliver experiments and supplies to the astronauts living aboard International Space Station.
You can watch the launch live on Space.com, courtesy of NASA TV. The webcast will begin at 12 p.m. EDT (1600 GMT), and liftoff from the Eastern Shore of Virginia is set for 12:52 p.m. EDT (16:52 GMT). Weather permitting, the huge rocket may be visible over parts of the U.S. East Coast as it streaks out over the Atlantic Ocean.
As tall as a 13-story building, Orbital's Antares rocket will be carrying the company's Cygnus capsule, which is packed with about 3,293 lbs. (1,493.8 kilograms) of cargo, including astronaut food, equipment, science experiments and small satellites. [Gallery: Orbital Sciences' Orb-2 Cargo Mission in Photos]
East Coasters may have the chance to see the Antares rocket loft the Cygnus spacecraft into orbit when it takes off Sunday (July 13) at 12:52 p.m. EDT (1652 GMT). This map shows how many degrees viewers should look above the horizon.
(Image credit: Orbital Sciences)
The launch will be Orbital's second official resupply mission to the space station after a first flight in January and a demonstration flight that brought Cygnus to the orbiting lab in September 2013. Orbital, which is based in Dulles, Virginia, has a $1.9-billion contract with NASA to carry out eight cargo missions through 2016. Elon Musk's SpaceX, the only other commercial company with a NASA resupply contract, has been commissioned to fly 12 missions to the station under a $1.6 billion deal.
How Orbital Sciences' Antares rocket and Cygnus spacecraft service the space station. See how Orbital's Cygnus spacecraft and Antares rockets works in this infographic.
(Image credit: Karl Tate, SPACE.com Infographics Artist)
"We're real proud to be part of the team that is keeping the station flying and providing the crew with cargo and the research that they need," Frank Culbertson, a former NASA astronaut and Orbital Sciences executive vice president, told reporters in a pre-launch briefing Saturday afternoon (July 12).
The rocket will blast off from a seaside pad operated by the Mid-Atlantic Regional Spaceport, or MARS, at NASA's Wallops Flight Facility on Wallops Island, Virginia.
If all goes according to plan, the Cygnus spacecraft will reach its initial orbit about 10 minutes after launch. Then, the capsule will perform a series of maneuvers to reach the International Space Station by Wednesday morning (July 16). Astronauts living on board the orbiting lab will capture the vessel using a huge robotic arm.
"It's been a little bit of a challenge to get to this point," Culbertson said.
The mission, dubbed Orb-2, was originally scheduled for May. It had been postponed due to conflicts with other launches and technical issues, including the failure of an AJ26 engine — the kind that powers Antares' first stage — during a test at NASA's Stennis Space Center in Mississippi, which prompted an investigation.
Then this week, the mission was repeatedly delayed because stormy weather prevented Orbital's launch team from conducting normal operations to get the rocket ready on the pad. But by Saturday morning (July 12), the gray clouds and fog that had been hanging over the region dissipated. Launch managers are expecting a 90-percent chance of favorable weather for launch on Sunday, with partly cloudy skies and a slight breeze, said Wallops Flight Facility test director Sarah Daugherty.
Launching a rocket from the Eastern Shore on a Sunday during peak summer tourism season poses an interesting set of challenges: crowds of vacationers and boaters. But Daugherty said Wallops officials have made an extra effort to talk to recreational boaters about staying out of the danger zone around the pad.
"We're confident that we can have a clear range for the first second of that five-minute window," Daugherty said.
Unlike SpaceX's Dragon capsule, which is reusable, Cygnus is disposable. Orbital's vessel will be berthed to the space station for about 30 days before it is filled with trash and cast off toward Earth, where it will eventually meet its fiery demise in the atmosphere over the South Pacific.
Visit Space.com today at 12 p.m. EDT for live coverage of Orbital Sciences' Antares rocket launch.
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