QCD phase diagram at finite baryon and isospin chemical potentials

Abstract

The phase structure of two-flavor QCD is explored for thermal systems with finite baryon- and isospin-chemical potentials, mu_B and mu_{iso}, by using the Polyakov-loop extended Nambu--Jona-Lasinio (PNJL) model. The PNJL model with the scalar-type eight-quark interaction can reproduce lattice QCD data at not only mu_{iso}=mu_B=0 but also mu_{iso}>0 and mu_B=0. In the mu_{iso}-mu_{B}-T space, where T is temperature, the critical endpoint of the chiral phase transition in the mu_B-T plane at mu_{iso}=0 moves to the tricritical point of the pion-superfluidity phase transition in the mu_{iso}-T plane at mu_B=0 as mu_{iso} increases. The thermodynamics at small T is controlled by sqrt{sigma^2+pi^2} defined by the chiral and pion condensates, sigma and pi.

arXiv comment13 pages, 24 figures, published version, references added

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Cited by in corpus (38)

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• QCD phase transitions via a refined truncation of Dyson-Schwinger equations
• Three-flavor Nambu--Jona-Lasinio model at finite isospin chemical potential
• Magnetic structure of isospin-asymmetric QCD matter in neutron stars
• Chiral transition in a magnetic field and at finite baryon density
• Properties of Mesons in a Strong Magnetic Field
• Thermodynamics of (2+1)-flavor strongly interacting matter at nonzero isospin
• QCD phase diagram at finite baryon and isospin chemical potentials in Polyakov loop extended quark meson model with vector interaction
• Interface Effect in QCD Phase Transitions via Dyson-Schwinger Equation Approach
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