Equation of state for neutron stars with hyperons and quarks in relativistic Hartree-Fock approximation

Abstract

We construct the equation of state (EoS) for neutron stars explicitly including hyperons and quarks. Using the quark-meson coupling model with relativistic Hartree-Fock approximation, the EoS for hadronic matter is derived by taking into account the strange (${\sigma }^{\ast }$ and $\varphi$) mesons as well as the light non-strange ($\sigma$, $\omega$, $\vec{\pi }$ and $\vec{\rho }$) mesons. Relevant coupling constants are determined to reproduce the experimental data of nuclear matter and hypernuclei in SU(3) flavor symmetry. For quark matter, we employ the MIT bag model with one-gluon-exchange interaction, and Gibbs criteria for chemical equilibrium in the phase transition from hadrons to quarks. We find that the strange vector ($\varphi$) meson and the Fock contribution make the hadronic EoS stiff, and that the maximum mass of a neutron star can be consistent with the observed mass of heavy neutron stars even if the coexistence of hadrons and quarks takes place in the core. However, in the present calculation the transition to pure quark matter does not occur in stable neutron stars. Furthermore, the lower bound of the critical chemical potential of the quark-hadron transition at zero temperature turns out to be around 1.5 GeV in order to be consistent with the recent observed neutron star data.

37 pages, 11 figures, 7 tables

References in corpus (17)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Neutron Star Observations: Prognosis for Equation of State Constraints
• Hyperon Puzzle: Hints from Quantum Monte Carlo Calculations
• Higher-order effects on the incompressibility of isospin asymmetric nuclear matter
• Hyperon mixing and universal many-body repulsion in neutron stars
• Hadron-quark mixed phase in hyperon stars
• Neutron stars with hyperon cores: stellar radii and EOS near nuclear density
• Influence of the hadronic equation of state on the hadron-quark phase transition in neutron stars
• Large-mass neutron stars with hyperonization
• EoS for massive neutron stars
• The role of strangeness in hybrid stars and possible observables
• Symmetry Energy in Nuclear Surface
• Quark-meson coupling model with the cloudy bag
• Medium Modifications of Hadron Properties and Partonic Processes
• Multi-antikaonic nuclei in the relativistic mean-field theory

Cited by in corpus (37)

• Heavy Baryons in Compact Stars
• Towards Strong Field Tests of Beyond Horndeski Gravity Theories
• Hypernuclear stars from relativistic Hartree-Fock density functional theory
• Hybrid Stars using the Quark-Meson Coupling and Proper Time NJL Models
• The Hyperon Puzzle in Neutron Stars
• Can the PREX-2 and CREX results be understood by relativistic mean-field models with the astrophysical constraints?
• Delta-resonances and hyperons in proto-neutron stars and merger remnants
• Asymmetric nuclear matter in relativistic mean-field models with isoscalar- and isovector-meson mixing
• Nuclear fourth-order symmetry energy and its effects on neutron star properties in the relativistic Hartree-Fock theory
• Hybrid stars in light of the HESS J1731-347 remnant and the PREX-II experiment
• Constraints on Nuclear Saturation Properties from Terrestrial Experiments and Astrophysical Observations of Neutron Stars
• Equation of state and composition of proto-neutron stars and merger remnants with hyperons
• Constraints on Density Dependent MIT Bag Model Parameters for Quark and Hybrid Stars
• Contraction of cold neutron star due to in the presence a quark core
• The Role of Baryon Structure in Neutron Stars
• Nuclear matter at finite temperature and static properties of proto-neutron star
• A Detailed Analysis of the Special Points on $M-R$ Solutions of Hybrid (Twin) Stars
• Impact of medium modification of the nucleon weak and electromagnetic form factors on the neutrino mean free path in dense matter
• Properties of Hybrid Stars with Density Dependent Bag Model
• Effects of hadron-quark phase transition on properties of Neutron Stars
• Variation of delta baryon mass and hybrid star properties in static and rotating conditions
• Properties of Neutron Stars with hyperon cores in parameterized hydrostatic conditions
• Deconfinement of non-strange hadronic matter with nucleons and $\Delta$ baryons to quark matter in neutron stars
• The structure of hybrid neutron star in Einstein-$\Lambda$ gravity
• The structure of cold neutron star with a quark core within the MIT and NJL models
• Quark-Pauli effects in three octet-baryons
• Effects of Many-body Interactions in Hypernuclei with Korea-IBS-Daegu-SKKU Functionals
• Hyperonization in compact stars
• Weak interaction axial form factors of the octet baryons in nuclear medium
• Role of $\Delta$s in determining the properties of Neutron Stars in parameterized hydrostatic equilibrium
• Applicability of Relativistic Point-Coupling Models to Neutron Star Physics
• Electroweak form factors of baryons in dense nuclear matter
• Equation of state for neutron star matter with NJL model and Dirac-Brueckner-Hartree-Fock approximation
• Novel features of asymmetric nuclear matter from terrestrial experiments and astrophysical observations of neutron stars
• Equation of state for hyperonic neutron-star matter in SU(3) flavor symmetry
• On the Cooling of Compact Stars in Light of the HESS J1731-347 Remnant
• Equation of state for hybrid stars with strangeness