Effective models of two-flavor QCD: finite $\mu$ and $m_q$-dependence

Abstract

We study effective models of chiral fields and Polyakov loop expected to describe the dynamics responsible for the phase structure of two-flavor QCD at finite temperature and density. We consider chiral sector described either using linear sigma model or 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.

10 pages, 6 figures

References in corpus (12)

• The QCD transition temperature: results with physical masses in the continuum limit
• The Phase Structure of the Polyakov--Quark-Meson Model
• The chiral and deconfinement crossover transitions: PNJL model beyond mean field
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• Thermodynamics and critical behavior in the Nambu-Jona-Lasinio model of QCD
• The QCD critical end point in the PNJL model
• Degrees of freedom and the phase transitions of two flavor QCD
• Multiple Critical Points in Effective Quark Models
• Polyakov loop and the color-flavor locked phase of Quantum Chromodynamics
• Influence of the Polyakov loop on the chiral phase transition in the two flavor chiral quark model
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Cited by in corpus (7)

• The renormalization group and quark number fluctuations in the Polyakov loop extended quark-meson model at finite baryon density
• Magnetic Susceptibility of the Quark Condensate and Polarization from Chiral Models
• The Critical End Point of Quantum Chromodynamics Detected by Chirally Imbalanced Quark Matter
• Strong-interaction matter under extreme conditions from chiral quark models with nonlocal separable interactions
• Color screening masses from string models
• On-shell versus curvature mass parameter fixing schemes in the quark-meson model and its phase diagrams
• Nucleon Properties at Finite Temperature in the Extended Quark-Sigma Model