Neutron star matter with strange interactions in a relativistic quark model

Abstract

The effect of strange interactions in neutron star matter and the role of the strange meson-hyperon couplings are studied in a relativistic quark model where the confining interaction for quarks inside a baryon is represented by a phenomenological average potential in an equally mixed scalar-vector harmonic form. The hadron-hadron interaction in nuclear matter is then realized by introducing additional quark couplings to $\sigma$, $\omega$, $\rho$, ${\sigma }^{\ast }$ and $\varphi$ mesons through mean-field approximations. The meson-baryon couplings are fixed through the SU(6) spin-flavor symmetry and the SU(3) flavor symmetry to determine the hadronic equation of state (EoS). We find that the SU(3) coupling set gives the potential depth between $\Lambda$s around $-5$ MeV and favours a stiffer EoS.The radius for the canonical neutron star lies within a range of $12.7$ to $13.1$ km.

arXiv comment9 pages, 6 figures. arXiv admin note: substantial text overlap with arXiv:1609.02708, arXiv:1702.02310

References in corpus (43)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Gravitational-wave constraints on the neutron-star-matter Equation of State
• The Equation of State from Observed Masses and Radii of Neutron Stars
• From hadrons to quarks in neutron stars: a review
• The NANOGrav Nine-year Data Set: Mass and Geometric Measurements of Binary Millisecond Pulsars
• Neutron star radii and crusts: uncertainties and unified equations of state
• The role of nucleon structure in finite nuclei
• The Compression-Mode Giant Resonances and Nuclear Incompressibility
• Do hyperons exist in the interior of neutron stars ?
• Evidence of Xi hypernuclear production in the ^{12}C(K^-,K^+)^{12}_{Xi}Be reaction
• Hyperons in neutron-star cores and two-solar-mass pulsar
• Can very compact and very massive neutron stars both exist?
• Combined Constraints on the Equation of State of Dense Neutron-Rich Matter from Terrestrial Experiments and Observations of Neutron Stars
• Constraints on $\Sigma$ Nucleus Dynamics from Dirac Phenomenology of ${\Sigma }^{-}$ Atoms
• (No) neutron star maximum mass constraint from hypernuclei
• Equation of state of hypernuclear matter: impact of hyperon--scalar-meson couplings
• Aspects of Chiral Symmetry
• Equation of State for Nucleonic and Hyperonic Neutron Stars with Mass and Radius Constraints
• Competition between delta isobars and hyperons and properties of compact stars
• A new temperature dependent hyperonic equation of state: application to rotating neutron star models and I-Q-relations
• Equation of state for neutron stars in SU(3) flavor symmetry
• Hypernuclear matter in a complete SU(3) symmetry group
• Neutron star equation of state from the quark level in the light of GW170817
• Critical Density and Impact of $\Delta (1232)$ Resonance Formation in Neutron Stars
• Delta isobars in relativistic mean-field models with $\sigma$-scaled hadron masses and couplings
• Hybrid stars in the quark-meson coupling model with superconducting quark matter
• Neutron stars with small radii -- the role of delta resonances
• Nuclear Symmetry Energy Extracted from Laboratory Experiments
• Cooling of hypernuclear compact stars
• Relativistic Mean-Field Models with Scaled Hadron Masses and Couplings: Hyperons and Maximum Neutron Star Mass
• Dynamical Model of Coherent Pion Production in Neutrino-Nucleus Scattering
• $\Delta$ (1232) effects in density-dependent relativistic Hartree-Fock theory and neutron stars
• Hyperons: the strange ingredients of the nuclear equation of state
• EoS for massive neutron stars
• Many-body forces in the equation of state of hyperonic matter
• The scenario of two families of compact stars 1. Equations of state, mass-radius relations and binary systems
• Compact stars within an asy-soft quark-meson-coupling model
• Hyperon star in a modified quark meson coupling model
• Nuclear symmetry energy in a modified quark meson coupling model
• Nucleon radius effects on neutron stars in quark mean field model
• Quark mean field model with pion and gluon corrections for $\Lambda ,{\Xi }^0$ hypernuclei and neutron stars

Cited by in corpus (24)

• Progress in Constraining Nuclear Symmetry Energy Using Neutron Star Observables Since GW170817
• Bayesian Inference of High-density Nuclear Symmetry Energy from Radii of Canonical Neutron Stars
• GW190814's secondary component with mass $(2.50-2.67)$ M${}_{\odot }$ as a super-fast pulsar
• Heavy Baryons in Compact Stars
• Proto-neutron stars with heavy baryons and universal relations
• Massive $\Delta$-resonance admixed hypernuclear stars with anti-kaon condensations
• Rapidly rotating $\Delta$-resonance-admixed hypernuclear compact stars
• EoS for hot neutron stars
• $\Delta$-admixed neutron stars: spinodal instabilities and dUrca processes
• Delta-resonances and hyperons in proto-neutron stars and merger remnants
• Translating neutron star observations to nuclear symmetry energy via artificial neural networks
• Chiral symmetry restoration and the $\Delta$ matter formation in neutron stars
• Constraints on the muon fraction and density profile in neutron stars
• Equation of state and composition of proto-neutron stars and merger remnants with hyperons
• Exotic Baryons in Hot Neutron Stars
• Light clusters in dilute heavy-baryon admixed nuclear matter
• Baryonic dense matter in view of gravitational-wave observations
• Influence of the nuclear symmetry energy slope on observables of compact stars with $\Delta$-admixed hypernuclear matter
• Hyperonization in compact stars
• Symmetry energy of super-dense neutron-rich matter from integrating barotropic pressures in neutron stars and heavy-ion reactions
• Role of $\Delta$s in determining the properties of Neutron Stars in parameterized hydrostatic equilibrium
• A study of the elastic $\pi N$ scattering at finite baryon density
• Influence of hyperon-hyperon interaction on the properties of neutron stars
• Properties of H particle-admixed compact star