- Measuring shear viscosity using correlations (2007) -
Measurements of transverse momentum fluctuations can be used to
determine the shear viscosity . We use current data to estimate
the viscosity-to-entropy ratio in the range from 0.08 to 0.3,
and discuss how future measurements can reduce this uncertainty.
- Indications for cluster melting from forward-backward charge
fluctuations at RHIC energies (2006) - We study forward-backward
charge fluctuations to probe the correlations among produced
particles in ultra relativistic heavy ion collisions. We develop
a model that describes the forward-backward dynamical
fluctuations and apply it to interpret the recent PHOBOS data.
Within the present model, the dynamical fluctuations are related
to the particle production mechanism via cluster decay and to
long range correlations between the forward and backward
rapidity hemispheres. We argue that with a tight centrality cut,
PHOBOS may see a strong decrease of the dynamical fluctuations.
Within the present model, thi