Role of quark mass in cold and dense perturbative QCD

被引：102
作者：
Fraga, ES
Romatschke, P
机构：
[1] Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio De Janeiro, Brazil
[2] Univ Bielefeld, Fac Phys, D-33615 Bielefeld, Germany
来源：
PHYSICAL REVIEW D | 2005年 / 71卷 / 10期
关键词：
D O I：
10.1103/PhysRevD.71.105014
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We consider the equation of state of QCD at high density and zero temperature in perturbation theory to first order in the coupling constant alpha(s). We compute the thermodynamic potential including the effect of a nonvanishing mass for the strange quark and show that corrections are sizable. Renormalization group running of the coupling and the strange quark mass plays a crucial role. The structure of quark stars is dramatically modified.
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