Complex Langevin Simulation of the SU(3) Spin Model With Nonzero Chemical Potential

Karsch, F.; Wyld, H.W.

doi:10.1103/PhysRevLett.55.2242

Complex Langevin Simulation of the SU(3) Spin Model With Nonzero Chemical Potential

F. Karsch
(
- Illinois U., Urbana
)
,
H.W. Wyld
(
- Illinois U., Urbana
)

Sep, 1985

18 pages

Published in:

Phys.Rev.Lett. 55 (1985) 2242

DOI:

10.1103/PhysRevLett.55.2242

Report number:

ILL-TH-85-60

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Abstract: (APS)

We study the effective three-dimensional SU(3) spin model with nonzero chemical potential. This model describes the strong-coupling, large-fermion-mass limit of QCD at finite temperature and baryon density. The results obtained with a complex Langevin algorithm are encouraging for a future simulation of QCD with nonzero chemical potential. The Langevin simulations converge even for large values of the chemical potential, and excellent agreement with exact solutions in the extreme strong-coupling (β=0) limit has been found.

MODEL: SPIN
SPIN: MODEL
SYMMETRY: SU(3)
LANGEVIN EQUATION
LATTICE FIELD THEORY: THREE-DIMENSIONAL
LATTICE FIELD THEORY: CRITICAL PHENOMENA
FIELD THEORY: EFFECTIVE ACTION
POTENTIAL: CHEMICAL
EXPANSION: STRONG COUPLING
STRONG COUPLING: EXPANSION

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