Complex Langevin dynamics for dynamical QCD at nonzero chemical potential: A comparison with multiparameter reweighting

被引：43

作者：

Fodor, Z. ^{[1
,2
,3
]}

Katz, S. D. ^{[3
,4
]}

Sexty, D. ^{[1
]}

Torok, C. ^{[3
,4
]}

机构：

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

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

[3] Eotvos Lorand Univ, Inst Theoret Phys, H-1117 Budapest, Hungary

[4] MTA ELTE Lendulet Lattice Gauge Theory Res Grp, H-1117 Budapest, Hungary

来源：

PHYSICAL REVIEW D | 2015年 / 92卷 / 09期

关键词：

LATTICE QCD; SIMULATIONS; EQUATION;

D O I：

10.1103/PhysRevD.92.094516

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study lattice QCD at nonvanishing chemical potential using the complex Langevin equation. We compare the results with multiparameter reweighting both from mu = 0 and phase-quenched ensembles. We find a good agreement for lattice spacings below approximate to 0.15 fm. On coarser lattices the complex Langevin approach breaks down. Four flavors of staggered fermions are used on N-t = 4, 6 and 8 lattices. For one ensemble we also use two flavors to investigate the effects of rooting.

引用

页数：9

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