Phase diagram of QCD at finite temperature and chemical potential from lattice simulations with dynamical Wilson quarks

Journal Article · Mon Aug 01 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.034504· OSTI ID:20711249

Hesheng, Chen; Xiangqian, Luo ^[1]

---

1. Department of Physics, Zhongshan (Sun Yat-Sen) University, Guangzhou 510275 (China)

We present the first results for lattice QCD at finite temperature T and chemical potential {mu} with four flavors of Wilson quarks. The calculations are performed using the imaginary chemical potential method at {kappa}=0,0.001,0.15,0.165,0.17 and 0.25, where {kappa} is the hopping parameter, related to the bare quark mass m and lattice spacing a by {kappa}=1/(2ma+8). Such a method allows us to do large scale Monte Carlo simulations at imaginary chemical potential {mu}=i{mu}{sub I}. By analytic continuation of the data with {mu}{sub I}<{pi}T/3 to real values of the chemical potential, we expect at each {kappa} set-membership sign [0,{kappa}{sub chiral}], a phase transition line on the ({mu},T) plane, in a region relevant to the search for quark-gluon plasma in heavy-ion collision experiments. The transition is first order at small or large quark mass, and becomes a crossover at intermediate quark mass.

• OSTI ID: 20711249
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPUTERIZED SIMULATION
FLAVOR MODEL
HEAVY ION REACTIONS
LATTICE FIELD THEORY
MONTE CARLO METHOD
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
POTENTIALS
QUANTUM CHROMODYNAMICS
QUARK MATTER
QUARKS
REST MASS