Entanglement between deconfinement transition and chiral symmetry restoration

2010/06/30 by Yuji Sakai, Takahiro Sasaki, Hiroaki Kouno +1 · 1 citation
Physics and Astronomy · #hep-ph #hep-lat #hep-th #nucl-th

paper · pdf · doi:10.1103/physrevd.82.076003

published as Phys.Rev.D82:076003,2010 · 10 pages, 16 figures, published version

arxiv created 2010/10/08 · arxiv updated 2014/11/21

Abstract

We extend the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model by introducing an effective four-quark vertex depending on Polyakov loop. The effective vertex generates entanglement interactions between Polyakov loop and chiral condensate. The new model is consistent with lattice QCD data at imaginary quark-number chemical potential and real and imaginary isospin chemical potentials, particularly on strong correlation between the chiral and deconfinement transitions and also on the quark-mass dependence of the order of the Roberge-Weiss endpoint predicted by lattice QCD very lately. We investigate an influence of the entanglement interactions on a location of the tricritical point at real isospin chemical potential and a location of the critical endpoint at real quark-number chemical potential.

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