A model study of the equation of state, quark-number susceptibility and scalar susceptibility of QCD at finite chemical potential and zero temperature

被引：3
|
作者：
Zhu HuiXia [1 ,2 ]
Wang HaiJiang [1 ]
Pan DanFeng [1 ]
Zong HongShi [1 ,3 ]
机构：
[1] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
[2] Anhui Normal Univ, Coll Phys & Elect Informat, Wuhu 241000, Peoples R China
[3] Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China
来源：
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2012年 / 55卷 / 12期
基金：
中国国家自然科学基金;
关键词：
the equation of state; quark number density; quark-number susceptibility; scalar susceptibility; phase transition; DYSON-SCHWINGER EQUATIONS; CONTINUUM; TRANSITION; PROPAGATOR; MASSES; STARS;
D O I：
10.1007/s11433-012-4946-8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this article, we try to calculate the equation of state (EOS) of quantum chromodynamics (QCD) at finite chemical potential and zero temperature in the framework of a nonperturbative QCD model. Compared with the cold, perturbative EOS of QCD proposed by Fraga et al., our EOS approaches more fastly to the free quark gas result at large chemical potential. It is expected that our EOS can provide a possible new tool for the study of neutron star. We also try to provide a direct approach for calculating quark number susceptibility and scalar susceptibility at finite chemical potential and zero temperature.
引用
收藏
页码：2425 / 2433
页数：9
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