Resummed lattice QCD equation of state at finite baryon density: Strangeness neutrality and beyond

被引：25

作者：

Borsanyi, Szabolcs ^{[1
]}

Guenther, Jana N. ^{[1
]}

Kara, Ruben ^{[1
]}

Fodor, Zoltan ^{[1
,2
,3
,4
,5
]}

Parotto, Paolo ^{[2
]}

Pasztor, Attila ^{[3
]}

Ratti, Claudia ^{[6
]}

Szabo, Kalman ^{[1
,4
]}

机构：

[1] Wuppertal Univ, Dept Phys, Gaussstr 20, D-42119 Wuppertal, Germany

[2] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[3] Eotvos Lorand Univ, Inst Theoret Phys, Pazmany P Setany 1-A, H-1117 Budapest, Hungary

[4] Forschungszentrum Julich, Julich Supercomp Ctr, D-52425 Julich, Germany

[5] Univ Calif San Diego, Phys Dept, San Diego, CA 92093 USA

[6] Univ Houston, Dept Phys, Houston, TX 77204 USA

来源：

PHYSICAL REVIEW D | 2022年 / 105卷 / 11期

基金：

美国国家科学基金会;

关键词：

PHASE-DIAGRAM; TEMPERATURE;

D O I：

10.1103/PhysRevD.105.114504

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate a resummed equation of state with lattice QCD simulations at imaginary chemical potentials. This work presents a generalization of the scheme introduced in [Phys. Rev. Lett. 126, 232001 (2021) to the case of nonzero mu(s), focusing on the line of strangeness neutrality. We present results up to mu(B)/T <= 3.5 on the strangeness neutral line < S > = 0 in the temperature range 130 MeV <= T <= 280 MeV. We also extrapolate the finite baryon density equation of state to small nonzero values of the strangeness-to-baryon ratio R = < S > / < B >. We perform a continuum extrapolation using lattice simulations of the 4stout-improved staggered action with 8, 10, 12 and 16 time slices.

引用

页数：16

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