Thermodynamics of (2+1)-flavor strongly interacting matter at nonzero isospin

Abstract

We investigate the phase structure of strongly interacting matter at non-vanishing isospin before the onset of pion condensation in the framework of the unquenched Polyakov-Quark-Meson model with 2+1 quark flavors. We show results for the order parameters and all relevant thermodynamic quantities. In particular, we obtain a moderate change of the pressure with isospin at vanishing baryon chemical potential, whereas the chiral condensate decreases more appreciably. We compare the effective model to recent lattice data for the decrease of the pseudo-critical temperature with the isospin chemical potential. We also demonstrate the major role played by the value of the pion mass in the curvature of the transition line, and the need for lattice results with a physical pion mass. Limitations of the model at nonzero chemical potential are also discussed.

8 pages, 4 figures; version published in Phys. Lett. B

References in corpus (30)

• The QCD equation of state with dynamical quarks
• The Phase Structure of the Polyakov--Quark-Meson Model
• The phase structure of the Polyakov--quark-meson model beyond mean field
• The QCD phase diagram at nonzero quark density
• Results from the Relativistic Heavy Ion Collider
• The chiral and deconfinement crossover transitions: PNJL model beyond mean field
• Phase transitions in the early and the present Universe
• Improved Polyakov-loop potential for effective models from functional calculations
• Nucleon mass and sigma term from lattice QCD with two light fermion flavors
• QCD Thermodynamics from the Lattice
• Fluctuations in the quark-meson model for QCD with isospin chemical potential
• Polyakov loop potential at finite density
• Phase diagram and surface tension in the three-flavor Polyakov-quark-meson model
• Three-flavor Nambu--Jona-Lasinio model at finite isospin chemical potential
• Model study of the sign problem in the mean-field approximation
• The QCD phase diagram: Results and challenges
• Pion and Kaon Condensation at Finite Temperature and Density
• QCD phase diagram at finite baryon and isospin chemical potentials in Polyakov loop extended quark meson model with vector interaction
• QCD phase diagram at finite baryon and isospin chemical potentials
• The problem of repulsive quark interactions - Lattice versus mean field models
• Molecular dynamics description of an expanding $q$/$\bar{q}$ plasma with the Nambu--Jona-Lasinio model and applications to heavy ion collisions at RHIC and LHC energies
• Influence of the isospin and hypercharge chemical potentials on the location of the CEP in the mu_B-T phase diagram of the SU(3)_L x SU(3)_R chiral quark model
• The Cosmological QCD Phase Transition Revisited
• Nonperturbative Yukawa theory at finite density and temperature
• Perturbative Yukawa theory at finite density: the role of masses and renormalization group flow at two loops
• Does the CMB prefer a leptonic Universe?
• Supernova Equation of State with an extended SU(3) Quark-Meson Model
• Mass and chemical asymmetry in QCD matter
• The influence of magnetic field on the pion superfluidity and phase structure in the NJL model
• Phase structure of hadronic and Polyakov-loop extended NJL model at finite isospin density

Cited by in corpus (33)

• QCD at finite temperature and chemical potential from Dyson-Schwinger equations
• QCD phase diagram for nonzero isospin-asymmetry
• A search for inverse magnetic catalysis in thermal quark-meson models
• Magnetic structure of isospin-asymmetric QCD matter in neutron stars
• Pion condensation and phase diagram in the Polyakov-loop quark-meson model
• Compact stars in a SU(3) Quark-Meson Model
• Two-flavor chiral perturbation theory at nonzero isospin: Pion condensation at zero temperature
• QCD at finite isospin density: chiral perturbation theory confronts lattice data
• Chiral imbalanced hot and dense quark matter: NJL analysis at the physical point and comparison with lattice QCD
• Cold QCD at finite isospin density: confronting effective models with recent lattice data
• Polyakov SU(3) extended linear $\sigma$-model: Sixteen mesonic states in chiral phase-structure
• SU(3) Polyakov Linear Sigma-Model in an External Magnetic Field
• Isospin asymmetry in holographic baryonic matter
• Magnetic susceptibility of a strongly interacting thermal medium with 2+1 quark flavors
• Thermodynamics and susceptibilities of isospin imbalanced QCD matter
• Chiral density wave versus pion condensation at finite density
• High-Energy Phase Diagrams with Charge and Isospin Axes under Heavy-Ion Collision and Stellar Conditions
• Phase diagram and nucleation in the Polyakov-loop-extended Quark-Meson truncation of QCD with the unquenched Polyakov-loop potential
• Hot QCD at finite isospin density: confronting SU(3) Nambu-Jona-Lasinio model with recent lattice data
• Condensates and pressure of two-flavor chiral perturbation theory at nonzero isospin and temperature
• Pion and kaon condensation at zero temperature in three-flavor $\chi$PT at nonzero isospin and strange chemical potentials at next-to-leading order
• QCD equation of state at finite isospin density from the linear sigma model with quarks: The cold case
• Perturbative thermodynamics at nonzero isospin density for cold QCD
• Implications of the fermion vacuum term in the extended SU(3) Quark Meson model on compact stars properties
• Effects of Renormalizing the chiral SU(2) Quark-Meson-Model
• Stressed Cooper pairing in QCD at high isospin density: effective Lagrangian and random matrix theory
• Supernova Equation of State with an extended SU(3) Quark-Meson Model
• On the origin of the peak of the sound velocity for isospin imbalanced strongly interacting matter
• Describing the speed of sound peak of isospin-asymmetric cold strongly interacting matter using effective models
• Pion superfluid phase transition under external magnetic field including inverse magnetic catalysis effect
• Magnetic field effect on pion superfluid
• Dual meson condensates in the Polyakov-loop extended linear sigma model
• Light mesons around critical end points in $T-{\mu }_B-{\mu }_I-eB$ space