Quark confinement in an equiparticle quark model: application to stellar matter

Abstract

We perform an improvement in a thermodynamical consistent model with density dependent quark masses ($m_{u,d,s}^{\prime }$) by introducing effects of quark confinement/deconfinement phase transition, at high density regime and zero temperature, by means of the traced Polyakov loop ($\Phi$). We use realistic values for the current quark masses, provided by the Particle Data Group, and replace the constants of the interacting part of $m_{u,d,s}^{\prime }$ by functions of $\Phi$, leading to a first order phase transition structure, for symmetric and stellar quark matter, with $\Phi$ being the order parameter. We show that the improved model points out the direction of the chiral symmetry restoration due to the emergence of a deconfined phase. In another application, we construct quark stars mass-radius profiles, obtained from this new model, and show to be possible to satisfy recent astrophysical observational data coming from the LIGO and Virgo Collaboration, and the NICER mission concerning the millisecond pulsars PSR J0030+0451, and PSR J0740+6620.

arXiv comment11 pages, 13 figures

References in corpus (46)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Multi-messenger Observations of a Binary Neutron Star Merger
• GW170817: Measurements of Neutron Star Radii and Equation of State
• PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
• A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
• QCD Phenomenology based on a Chiral Effective Lagrangian
• GW190425: Observation of a Compact Binary Coalescence with Total Mass $\sim 3.4M_{\odot }$
• NJL-model analysis of dense quark matter
• A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
• Dyson-Schwinger Equations and the Application to Hadronic Physics
• The Infrared Behavior of QCD Green's Functions - Confinement, Dynamical Symmetry Breaking, and Hadrons as Relativistic Bound States
• Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620
• Chiral effective model with the Polyakov loop
• Phases of QCD: lattice thermodynamics and a field theoretical model
• Neutrino Emission from Neutron Stars
• Polyakov loop, diquarks and the two-flavour phase diagram
• Phase diagrams in the three-flavor Nambu--Jona-Lasinio model with the Polyakov loop
• A Novel Approach to Model Hybrid Stars
• GW190814 as a massive rapidly-rotating neutron star with exotic degrees of freedom
• Thermodynamics of the PNJL model
• Thermodynamics, strange quark matter, and strange stars
• Phase transition effects on the dynamical stability of hybrid neutron stars
• Neutron stars and quark phases in the NJL model
• Deconfinement phase transition in hybrid neutron stars from the Brueckner theory with three-body forces and a quark model with chiral mass scaling
• Thermodynamics with density and temperature dependent particle masses and properties of bulk strange quark matter and strangelets
• Strange quark stars within the Nambu-Jona-Lasinio model
• Thermodynamic consistency, quark mass scaling, and properties of strange matter
• Quark stars within relativistic models
• Equilibrium and stability of charged strange quark stars
• Consistent relativistic mean field models constrained by GW170817
• Two-solar-mass hybrid stars: a two model description with the Nambu-Jona-Lasinio quark model
• Magnetised hybrid stars: effects of slow and rapid phase transitions at the quark-hadron interface
• Short-range correlations effects on the deformability of neutron stars
• Quark matter in light neutron stars
• Consistent Skyrme parametrizations constrained by GW170817
• Density dependent quark mass model revisited: Thermodynamic consistency, stability windows and stellar properties
• The equation of state and radial oscillations of neutron stars
• Bulk viscosity of strange quark matter in density-dependent quark mass model and dissipation of r-modes in strange stars
• Compact stars with a quark core within NJL model
• Why can hadronic stars convert into strange quark stars with larger radii
• Radial oscillations of quark stars from perturbative QCD
• Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model
• Hybrid stars with reactive interfaces: analysis within the Nambu-Jona-Lasinio model
• Thermodynamical phases in a PNJL model at zero temperature
• Second look to the Polyakov Loop Nambu-Jona-Lasinio model at finite baryonic density
• Phase transition and stiffer core fluid in neutron stars: Effects on stellar configurations, dynamical stability, and tidal deformability

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