Question: I want to use the $\LaTeX$ font in graphics. For text/numbers, this is easily done by `FontFamily -> "CMU Serif"` (on Ubuntu) like this:

```
Plot[Sin[x], {x, -Pi, Pi}, 
LabelStyle -> Directive[16, FontFamily -> "CMU Serif"],
AxesLabel -> {"Greek: \[Alpha],\[Beta],\[Gamma]", "Fancy font!"}]

```

![enter image description here](https://i.stack.imgur.com/ElcG8.png)

The English text and numbers are in LaTeX computer modern font, which is great, but the Greek is not. For comparison, it should be

![enter image description here](https://i.stack.imgur.com/jQJoh.png)

This is because Latex does not use computer modern for Greek letters, but rather a font which (in Ubuntu, at least) is called `cmmi10` font, as I found by looking at the PDF properties. The Greek letters correspond to characters in the range 161-195, as seen by this picture (obtained in LibreOffice `Special character` menu)

![enter image description here](https://i.stack.imgur.com/jsEkx.png)

but sadly only some 
of them work. The output of 

```
Style[FromCharacterCode[Range[161, 195]], FontFamily -> "cmmi10"]

```

is

![enter image description here](https://i.stack.imgur.com/Rl8WU.png)

So for some reason $\beta, \epsilon, \zeta $ and some more are displaying correctly, but others don't. Is there any way to fix this?

Answer: 
What you could do is download and install the **STIX** fonts [by following the instructions here](http://www.stixfonts.org/install.html). These fonts are (if I'm not mistaken) also used by `MathJAX`, the engine that renders $\LaTeX$ code on this web site. 

Then, in *Mathematica*, do something like this:

```
baseStyle = {FontFamily -> "STIXGeneral", 12, 
          ScriptSizeMultipliers -> .66, ScriptMinSize -> 6};

    Map[SetOptions[#, BaseStyle -> baseStyle] &, {Plot, ListPlot}];

    Plot[Sin[x], {x, -2, 2}, 
      AxesLabel -> {HoldForm@Subscript[x, 1], 
          HoldForm@Sin[Subscript[x, 1]]}]

```

![plot](https://i.stack.imgur.com/23Kxm.png)

The STIX fonts could also be replaced by "Times New Roman", but I suggest the former because they are designed for scientific typesetting and have all the necessary symbols, including Greek. In the `Map` command, I apply this choice of fonts to the types of plots I think are needed. You can customize the list `{Plot, ListPlot}` to whatever you like.
I just checked the [solution](https://mathematica.stackexchange.com/a/84971/280) by [Szabolcs](https://mathematica.stackexchange.com/users/12/szabolcs) and it kinda works for me, only the letter heights are wrong:

```
{greekLetters, variantForms, archaicalGreekLetters} =
  {{α, Α, β, Β, γ, Γ,
    δ, Δ, ϵ, Ε, ζ, Ζ,
    η, Η, θ, Θ, ι, Ι,
    κ, Κ, λ, Λ, μ, Μ,
    ν, Ν, ξ, Ξ, ο, Ο,
    π, Π, ρ, Ρ, σ, Σ,
    τ, Τ, υ, Υ, ϕ, Φ,
    χ, Χ, ψ, Ψ, ω, Ω},
   {ε, ϑ, ϰ, ϖ, ϱ, 
    ς, φ, ϒ},
   {ϝ, ϟ, ϛ, ϡ, Ϝ, Ϟ, 
    Ϛ, Ϡ}};

Style[greekLetters, FontFamily -> "Latin Modern Math", FontSlant -> Italic]
Style[variantForms, FontFamily -> "Latin Modern Math", FontSlant -> Italic]
Style[archaicalGreekLetters, FontFamily -> "Latin Modern Math", FontSlant -> Italic]

```

[![screenshot](https://i.stack.imgur.com/6NyBv.png)](https://i.stack.imgur.com/6NyBv.png)

I simply installed the [Latin Modern Math (OTF), version 1.959](http://www.gust.org.pl/projects/e-foundry/lm-math/download/latinmodern-math-1959.zip). My operating system is Windows 7 x64. These fonts are compatible with MS Word (the archive includes a test .docx file), but on my system in Word letters also have wrong heights (very large). In the test .docx file they are used only inside formulas, where they appear with correct heights.