Susceptibilities and the Phase Structure of a Chiral Model with Polyakov Loops

Details Susceptibilities and the Phase Structure of a Chiral Model with Polyakov Loops Susceptibilities and the Phase Structure of a Chiral Model with Polyakov Loops

2006-11-10

arxiv.org/abs/hep-ph/0611147v4

Phys.Rev.D75:074013,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 22 figures; text rearranged and references added. results and conclusions unchanged; final version accepted for publ

Scientific paper

10.1103/PhysRevD.75.074013

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.

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