Susceptibilities and the phase structure of a chiral model with Polyakov loops

Journal Article · Sun Apr 01 00:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.074013· OSTI ID:21020273

Sasaki, C; Friman, B ^[1]; Redlich, K ^[2]

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1. Gesellschaft fuer Schwerionenforschung, GSI, D-64291 Darmstadt (Germany)
2. Institute of Theoretical Physics, University of Wroclaw, PL-50204 Wroclaw (Poland)

In an extension of the Nambu-Jona-Lasinio model where the quarks interact with the temporal gluon field, represented by the Polyakov loop, we explore the relation between the deconfinement and chiral phase transitions. The effect of Polyakov loop dynamics on thermodynamic quantities, on the phase structure at finite temperature and baryon density and on various susceptibilities is presented. Particular emphasis is put on the behavior and properties of the fluctuations of the (approximate) order parameters and their dependence on temperature and net-quark number density. We also discuss how the phase structure of the model is influenced by the coupling of the quarks to the Polyakov loop.

• OSTI ID: 21020273
• Journal Information: Physical Review. D, Particles Fields, Vol. 75, Issue 7; Other Information: DOI: 10.1103/PhysRevD.75.074013; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
BARYONS
CHIRALITY
COUPLING
DENSITY
FLUCTUATIONS
GLUONS
ORDER PARAMETERS
PHASE TRANSFORMATIONS
QUANTUM FIELD THEORY
QUARKS