Polyakov loop extended Nambu-Jona-Lasinio model with imaginary chemical potential

Journal Article · Sat Mar 01 04:00:00 EST 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.051901· OSTI ID:21249679

Sakai, Yuji; Kashiwa, Kouji; Yahiro, Masanobu ^[1]; Kouno, Hiroaki ^[2]

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1. Department of Physics, Graduate School of Sciences, Kyushu University, Fukuoka 812-8581 (Japan)
2. Department of Physics, Saga University, Saga 840-8502 (Japan)

The Polyakov loop extended Nambu-Jona-Lasinio (PNJL) model with imaginary chemical potential is studied. The model possesses the extended Z{sub 3} symmetry that QCD does. Quantities invariant under the extended Z{sub 3} symmetry, such as the partition function, the chiral condensate, and the modified Polyakov loop, have Roberge-Weiss periodicity. The phase diagram of confinement/deconfinement transition derived with the PNJL model is consistent with the Roberge-Weiss prediction on it and the results of lattice QCD. The phase diagram of chiral transition is also presented by the PNJL model.

• OSTI ID: 21249679
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRALITY
CONDENSATES
CONFINEMENT
FORECASTING
PARTITION FUNCTIONS
PERIODICITY
PHASE DIAGRAMS
POTENTIALS
QUANTUM CHROMODYNAMICS
SIMULATION
SYMMETRY