Effective models of two-flavor QCD: Finiteμandmqdependence

2010/06/20 by Topi Kahara, T. Kähärä, Kimmo Tuominen
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.82.114026

published as Phys.Rev.D82:114026,2010 · 10 pages, 6 figures

arxiv created 2010/06/20 · openalex publication_date 2010/12/27 · arxiv updated 2011/01/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study the effective models of chiral fields and the Polyakov loop expected to describe the dynamics responsible for the phase structure of two-flavor QCD at finite temperature and density. We consider the chiral sector described either using the linear sigma model, including the fermion vacuum fluctuations, or the Nambu-Jona-Lasinio model and study the phase diagram and determine the location of the critical point as a function of the explicit chiral symmetry breaking (i.e. the bare quark mass m_q). We also discuss the possible emergence of the quarkyonic phase in this model.

Citations

• Confinement versus Chiral Symmetry
• Three-flavor chiral phase structure in hot and dense QCD matter
• Thermodynamics and critical behavior in the Nambu–Jona-Lasinio model of QCD
• Induced Universal Properties and Deconfinement