Isentropic thermodynamics in the Polyakov-Nambu-Jona-Lasinio model

Journal Article · Wed Apr 01 04:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.074015· OSTI ID:21308169

Fukushima, Kenji ^[1]

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1. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)

We discuss the isentropic trajectories on the QCD phase diagram in the temperature and the quark chemical potential plane using the Nambu-Jona-Lasinio model with the Polyakov loop coupling. We impose a constraint on the strange quark chemical potential so that the strange quark density is zero, which is the case in the ultra relativistic heavy-ion collisions. We compare our numerical results with the truncated estimates by the Taylor expansion in terms of the chemical potential to quantify the reliability of the expansion used in the lattice QCD simulation. We finally discuss the strange quark chemical potential induced by the strangeness neutrality condition and relate it to the ratio of the Polyakov loop and the anti-Polyakov loop.

• OSTI ID: 21308169
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPARATIVE EVALUATIONS
COUPLING
DENSITY
EXPANSION
HEAVY ION REACTIONS
ISENTROPIC PROCESSES
PHASE DIAGRAMS
POTENTIALS
QUANTUM CHROMODYNAMICS
RELATIVISTIC RANGE
RELIABILITY
S QUARKS
SIMULATION
STRANGENESS
THERMODYNAMICS