Width of the QCD transition in a Polyakov-loop DSE model

Abstract

We consider the pseudocritical temperatures for the chiral and deconfinement transitions within a Polyakov-loop Dyson-Schwinger equation approach which employs a nonlocal rank-2 separable model for the effective gluon propagator. These pseudocritical temperatures differ by a factor of two when the quark and gluon sectors are considered separately, but get synchronized and become coincident when their coupling is switched on. The coupling of the Polyakov-loop to the chiral quark dynamics narrows the temperature region of the QCD transition in which chiral symmetry and deconfinement is established. We investigate the effect of rescaling the parameter T_0 in the Polyakov-loop potential on the QCD transition for both the logarithmic and polynomial forms of the potential. While the critical temperatures vary in a similar way, the width of the transition is stronger affected for the logarithmic potential. For this potential the character of the transition changes from crossover to a first order one when T_0 < 210 MeV, but it remains crossover in the whole range of relevant T_0 values for the polynomial form.

10 pages, 6 figures, results for polynomial form of Polyakov-loop potential included, references added, final version to appear in Phys. Rev. D

References in corpus (50)

• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• QCD Phenomenology based on a Chiral Effective Lagrangian
• NJL-model analysis of dense quark matter
• The Infrared Behavior of QCD Green's Functions - Confinement, Dynamical Symmetry Breaking, and Hadrons as Relativistic Bound States
• The QCD equation of state with dynamical quarks
• Chiral effective model with the Polyakov loop
• Phases of QCD: lattice thermodynamics and a field theoretical model
• Is there still any Tc mystery in lattice QCD? Results with physical masses in the continuum limit III
• The QCD transition temperature: results with physical masses in the continuum limit II.
• Dyson-Schwinger Equations: Density, Temperature and Continuum Strong QCD
• Hadron production in Au-Au collisions at RHIC
• The Phase Structure of the Polyakov--Quark-Meson Model
• Polyakov loop, diquarks and the two-flavour phase diagram
• Infrared Properties of QCD from Dyson-Schwinger equations
• Quark Confinement from Color Confinement
• Susceptibilities and the Phase Structure of a Chiral Model with Polyakov Loops
• The phase structure of the Polyakov--quark-meson model beyond mean field
• Chiral Symmetry Restoration and $Z_N$ Symmetry
• Equation of State for physical quark masses
• On the relation of quark confinement and chiral symmetry breaking
• Thermodynamics of (2+1)-flavor QCD: Confronting Models with Lattice Studies
• On the magnetic equation of state in (2+1)-flavor QCD
• Ground-state Spectrum of Light-quark Mesons
• Meson fluctuations and thermodynamics of the Polyakov loop extended quark-meson model
• Dynamics and thermodynamics of a nonlocal Polyakov--Nambu--Jona-Lasinio model with running coupling
• Deconfinement phase transition and the quark condensate
• Meson screening masses from lattice QCD with two light and the strange quark
• Scaling behavior of quark propagator in full QCD
• Entanglement between deconfinement transition and chiral symmetry restoration
• Quark number susceptibilities: lattice QCD versus PNJL model
• Chiral and deconfinement transition from Dyson-Schwinger equations
• Continuum study of deconfinement at finite temperature
• Running coupling at finite temperature and chiral symmetry restoration in QCD
• Toward a first-principle derivation of confinement and chiral-symmetry-breaking crossover transitions in QCD
• Nonlocal PNJL model beyond mean field and the QCD phase transition
• Nonlocal SU(3) chiral quark models at finite temperature: the role of the Polyakov loop
• Nonlocal Polyakov-Nambu-Jona-Lasinio model with wavefunction renormalization at finite temperature and chemical potential
• Nonlocal chiral quark models with wavefunction renormalization: sigma properties and π-πscattering parameters
• Determination of QCD phase diagram from the imaginary chemical potential region
• Chiral Lagrangian at finite temperature from the Polyakov-Chiral Quark Model
• Finite T meson correlations and quark deconfinement
• T-dependence of pseudoscalar and scalar correlations
• Deconfinement and chiral transition with the highly improved staggered quark (HISQ) action
• Effects of mesonic correlations in the QCD phase transition
• Mean field exponents and small quark masses
• The QCD chiral transition temperature in a Dyson-Schwinger-equation context
• Analysis of chiral and thermal susceptibilities
• Pseudoscalar Meson Nonet at Zero and Finite Temperature
• Scalar sigma meson at finite temperature in nonlocal quark model
• Nonlocal quark model beyond mean field and QCD phase transition

Cited by in corpus (32)

• QCD at finite temperature and chemical potential from Dyson-Schwinger equations
• Third family of compact stars within a nonlocal chiral quark model equation of state
• Effective matrix model for deconfinement in pure gauge theories
• Chiral transition in a magnetic field and at finite baryon density
• Properties of Mesons in a Strong Magnetic Field
• Critical endpoint for deconfinement in matrix and other effective models
• Phase diagrams in nonlocal PNJL models constrained by Lattice QCD results
• D mesons at finite temperature and density in the PNJL model
• Effects of a dressed quark-gluon vertex in vector heavy-light mesons and theory average of B(c)* meson mass
• Collisional energy loss above the critical temperature in QCD
• Role of mesonic fluctuations in the Polyakov loop extended quark-meson model at imaginary chemical potential
• Medium induced Lorentz symmetry breaking effects in nonlocal PNJL models
• Mott dissociation of pions and kaons in hot, dense quark matter
• Polyakov-loop suppression of colored states in a quark-meson-diquark plasma
• Thermodynamic instabilities in dynamical quark models with complex conjugate mass poles
• Supporting the search for the CEP location with nonlocal PNJL models constrained by Lattice QCD
• Thermal properties of light mesons from holography
• ${\eta }^{\prime }$ and $\eta$ mesons at high T when the U_A(1) and chiral symmetry breaking are tied
• Effects of Model Parameters in Thermodynamics of the PNJL Model
• Constraining free parameters of a color superconducting non-local Nambu-Jona-Lasinio model using Bayesian analysis of neutron stars mass and radius measurements
• A large-$N_c$ PNJL model with explicit Z${}_{N_c}$ symmetry
• Thermodynamics of quark matter with multiquark clusters in an effective Beth-Uhlenbeck type approach
• Quasi-exotic open-flavor mesons
• Chiral phase transition and kaon-to-pion ratios in the entanglement SU(3) PNJL model
• Mass dependence of the deconfinement and chiral restoration critical temperatures in nonlocal SU(2) PNJL models
• Weak magnetic field effects on chiral critical temperature in a nonlocal Nambu--Jona-Lasinio model
• Recent selected theory developments for NICA
• Pseudo-scalar {\boldm $q\bar{q}$} bound states at finite temperatures within a Dyson-Schwinger--Bethe-Salpeter approach
• A Dyson-Schwinger model beyond isospin limit prepared for investigating U_A(1)-breaking temperature dependence
• Thermodynamics in NJL-like models
• Aspects of model dependence of eta'-eta complex treated by going beyond the isospin limit
• Restoration of singlet axial symmetry at finite temperature