Quark number susceptibilities at high temperatures

被引：56

作者：

Bazavov, A. ^{[1
]}

Ding, H. -T. ^{[1
,2
]}

Hegde, P. ^{[3
]}

Karsch, F. ^{[1
,3
]}

Miao, C. ^{[4
]}

Mukherjee, Swagato ^{[1
]}

Petreczky, P. ^{[1
]}

Schmidt, C. ^{[3
]}

Velytsky, A. ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[2] Columbia Univ, Dept Phys, New York, NY 10027 USA

[3] Univ Bielefeld, Fak Phys, D-33615 Bielefeld, Germany

[4] Johannes Gutenberg Univ Mainz, Inst Nucl Phys, D-55099 Mainz, Germany

来源：

PHYSICAL REVIEW D | 2013年 / 88卷 / 09期

关键词：

QCD TRANSITION; THERMODYNAMICS;

D O I：

10.1103/PhysRevD.88.094021

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate second and fourth order quark number susceptibilities for 2+1 flavor QCD in the high temperature region. In our study, we use two improved staggered fermion formulations, namely, the highly improved staggered quark formulation and the so-called p4 formulation, as well as several lattice spacings. Second order quark number susceptibilities are calculated using both improved staggered fermion formulations, and we show that in the continuum limit the two formulations give consistent results. The fourth order quark number susceptibilities are studied only using the p4 formulation and at nonzero lattice spacings. We compare our results on quark number susceptibilities with recent weak coupling calculations and find that these agree reasonably well with the lattice calculations within the estimated uncertainties.

引用

页数：9

共 46 条

[31] Lattice cut-off effects and their reduction in studies of QCD thermodynamics at non-zero temperature and chemical potential [J].