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

共 50 条

[41] Complex Langevin dynamics at finite chemical potential: mean field analysis in the relativistic Bose gas
Aarts, Gert
JOURNAL OF HIGH ENERGY PHYSICS, 2009, (05):
[42] On the convergence of complex Langevin dynamics: the three-dimensional XY model at finite chemical potential
Aarts, Gert
James, Frank A.
JOURNAL OF HIGH ENERGY PHYSICS, 2010, (08):
[43] Chiral dynamics in QCD at finite chemical potential
Gupta, S
Ray, R
PHYSICAL REVIEW D, 2004, 70 (11) : 114015 - 1
[44] QCD thermodynamics with nonzero chemical potential at Nt=6 and effects from heavy quarks
DeTar, C.
Levkova, L.
Gottlieb, Steven
Heller, U. M.
Hetrick, J. E.
Sugar, R.
Toussaint, D.
PHYSICAL REVIEW D, 2010, 81 (11):
[45] Random matrix theory of unquenched two-colour QCD with nonzero chemical potential
G. Akemann
T. Kanazawa
M. J. Phillips
T. Wettig
Journal of High Energy Physics, 2011
[46] Random matrix theory of unquenched two-colour QCD with nonzero chemical potential
Akemann, G.
Kanazawa, T.
Phillips, M. J.
Wettig, T.
JOURNAL OF HIGH ENERGY PHYSICS, 2011, (03):
[47] Gluon propagators in 2+1 lattice QCD with nonzero isospin chemical potential
Bornyakov, V. G.
Nikolaev, A. A.
Rogalyov, R. N.
Terentev, A. S.
EUROPEAN PHYSICAL JOURNAL C, 2021, 81 (08):
[48] Unquenched complex dirac spectra at nonzero chemical potential: Two-color QCD lattice data versus matrix model
Akemann, Gernot
Bittner, Elmar
PHYSICAL REVIEW LETTERS, 2006, 96 (22)
[49] Perturbative QCD at nonzero chemical potential:: Comparison with the large-Nf limit and apparent convergence -: art. no. 077901
Ipp, A
Rebhan, A
Vuorinen, A
PHYSICAL REVIEW D, 2004, 69 (07): : 4
[50] QCD critical point and complex chemical potential singularities
Stephanov, M. A.
PHYSICAL REVIEW D, 2006, 73 (09):

← 1 2 3 4 5 →