Chiral Phase Transition Temperature in (2+1)-Flavor QCD

被引：158

作者：

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

Hegde, P. ^{[3
]}

Kaczmarek, O. ^{[1
,2
,4
]}

Karsch, F. ^{[4
,5
]}

Lahiri, Anirban ^{[4
]}

Li, S. -T. ^{[1
,2
]}

Mukherjee, Swagato ^{[5
]}

Ohno, H. ^{[6
]}

Petreczky, P. ^{[5
]}

Schmidt, C. ^{[4
]}

Steinbrecher, P. ^{[5
]}

机构：

[1] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Hubei, Peoples R China

[2] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China

[3] Indian Inst Sci, Ctr High Energy Phys, Bangalore 560012, Karnataka, India

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

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

[6] Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3058577, Japan

来源：

PHYSICAL REVIEW LETTERS | 2019年 / 123卷 / 06期

基金：

中国国家自然科学基金;

关键词：

EQUATION-OF-STATE;

D O I：

10.1103/PhysRevLett.123.062002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a lattice-QCD-based determination of the chiral phase transition temperature in QCD with two degenerate, massless quarks and a physical strange quark mass using lattice QCD calculations with the highly improved staggered quarks action. We propose and calculate two novel estimators for the chiral transition temperature for several values of the light quark masses, corresponding to Goldstone pion masses in the range of 58 MeV less than or similar to m(pi) less than or similar to 163 MeV. The chiral phase transition temperature is determined by extrapolating to vanishing pion mass using universal scaling analysis. Finite-volume effects are controlled by extrapolating to the thermodynamic limit using spatial lattice extents in the range of 2.8-4.5 times the inverse of the pion mass. Continuum extrapolations are carried out by using three different values of the lattice cutoff, corresponding to lattices with temporal extents N-tau = 6, 8, and 12. After thermodynamic, continuum, and chiral extrapolations, we find the chiral phase transition temperature T-c(0) = 132(-6)(+3) MeV.

引用

页数：6

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