@inproceedings{1968871,
abstract = {We discuss the equation of state for QCD at non-zero temperature and density. We present results of a simulation for QCD with 2 flavors of p4-improved staggered fermions. Derivatives of $\ln {\cal Z}$ with respect to quark chemical potential $\mu_q$ up to fourth order are calculated, enabling estimates of the pressure, quark number density and associated susceptibilities as functions of $\mu_q$ via a Taylor series expansion. We also discuss the radius of convergence of the expansion as a function of temperature. It is found that the fluctuations in the quark number density increase in the vicinity of the phase transition temperature and the susceptibilities start to develop a pronounced peak as $\mu_q$ is increased. This suggests the presence of a critical endpoint in the $(T, \mu_q)$ plane.},
author = {Ejiri, S. and Allton, C. R and Hands, S. J and Kaczmarek, Olaf and Karsch, Frithjof and Laermann, Edwin and Schmidt, Christian},
issn = {0920-5632},
pages = {545--547},
title = {{The Equation of state for two flavor QCD at finite density}},
doi = {10.1016/S0920-5632(03)02636-7},
volume = {129/130},
year = {2004},
}