The Equation of State and Quark Number Susceptibility in Hard-Dense-Loop Approximation
Abstract
Based on the method proposed in [ H. S. Zong, W. M. Sun, Phys. Rev. \textbf{D 78}, 054001 (2008)], we calculate the equation of state (EOS) of QCD at zero temperature and finite quark chemical potential under the hard-dense-loop (HDL) approximation. A comparison between the EOS under HDL approximation and the cold, perturbative EOS of QCD proposed by Fraga, Pisarski and Schaffner-Bielich is made. It is found that the pressure under HDL approximation is generally smaller than the perturbative result. In addition, we also calculate the quark number susceptibility (QNS) at finite temperature and finite chemical potential under hard-thermal/dense-loop (HTL/HDL) approximation and compare our results with the corresponding ones in the previous literature.
Keywords
Cite
@article{arxiv.1007.1713,
title = {The Equation of State and Quark Number Susceptibility in Hard-Dense-Loop Approximation},
author = {Yu Jiang and Hua Li and Shi-song Huang and Wei-min Sun and Hong-shi Zong},
journal= {arXiv preprint arXiv:1007.1713},
year = {2014}
}
Comments
12 pages, 3 figures