Polyakov loop extended NJL model with imaginary chemical potential

Abstract

The Polyakov loop extended Nambu--Jona-Lasinio (PNJL) model with imaginary chemical potential is studied. The model possesses the extended ${\mathbb{Z}}_3$ symmetry that QCD does. Quantities invariant under the extended ${\mathbb{Z}}_3$ symmetry, such as the partition function, the chiral condensate and the modified Polyakov loop, have the Roberge-Weiss (RW) periodicity. The phase diagram of confinement/deconfinement transition derived with the PNJL model is consistent with the RW prediction on it and the results of lattice QCD. The phase diagram of chiral transition is also presented by the PNJL model.

5 pages, 5 figures

References in corpus (4)

• The Phase Structure of the Polyakov--Quark-Meson Model
• 2+1 Flavor Polyakov--Nambu--Jona-Lasinio Model at Finite Temperature and Nonzero Chemical Potential
• Polyakov loop and the color-flavor locked phase of Quantum Chromodynamics
• Effects of a multi-quark interaction on color superconducting phase transition in an extended NJL model

Cited by in corpus (3)

• Chiral crossover, deconfinement and quarkyonic matter within a Nambu-Jona Lasinio model with the Polyakov loop
• Phase diagram in the imaginary chemical potential region and extended Z3 symmetry
• Vector-type four-quark interaction and its impact on QCD phase structure