Quark-hadron crossover equations of state for neutron stars: constraining the chiral invariant mass in a parity doublet model

Abstract

We construct an equation of state (EOS) for neutron stars by interpolating hadronic EOS at low density and quark EOS at high density. A hadronic model based on the parity doublet structure is used for hadronic matter and a quark model of Nambu--Jona-Lasinio type is for quark matter. We assume crossover between hadronic matter and quark matter in the the color-flavor locked phase. The nucleon mass of the parity doublet model has a mass associated with the chiral symmetry breaking, and a chiral invariant mass $m_0$ which is insensitive to the chiral condensate. The value of $m_0$ affects the nuclear EOSs at low density, and has strong correlations with the radii of neutron stars. Using the constraint to the radius obtained by LIGO-Virgo and NICER, we find that $m_0$ is restricted as $600\mathrm{MeV}\lesssim m_0\lesssim 900\mathrm{MeV}$.

References in corpus (45)

• 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
• Relativistic Shapiro delay measurements of an extremely massive millisecond pulsar
• NJL-model analysis of dense quark matter
• From hadrons to quarks in neutron stars: a review
• Tidal Deformabilities and Radii of Neutron Stars from the Observation of GW170817
• GW170817: Joint Constraint on the Neutron Star Equation of State from Multimessenger Observations
• Implications of PREX-II on the equation of state of neutron-rich matter
• Hidden Local Symmetry at Loop -- A New Perspective of Composite Gauge Boson and Chiral Phase Transition
• How well do we know the neutron-matter equation of state at the densities inside neutron stars? A Bayesian approach with correlated uncertainties
• Symmetry Parameter Constraints From A Lower Bound On The Neutron-Matter Energy
• Hadron-Quark Crossover and Massive Hybrid Stars with Strangeness
• New Neutron Star Equation of State with Quark-Hadron Crossover
• Chiral Symmetry of Baryons
• Hadron-Quark Crossover and Massive Hybrid Stars
• The hadronic SU(3) Parity Doublet Model for Dense Matter, its extension to quarks and the strange equation of state
• Light baryons below and above the deconfinement transition: medium effects and parity doubling
• Cold, dense nuclear matter in a SU(2) parity doublet model
• Asymmetric nuclear matter in a parity doublet model with hidden local symmetry
• Nuclear matter within a dilatation-invariant parity doublet model: the role of the tetraquark at nonzero density
• Thermodynamics of dense hadronic matter in a parity doublet model
• Hybrid Stars in an SU(3) Parity Doublet Model
• Scale-Invariant Hidden Local Symmetry, Topology Change and Dense Baryonic Matter II
• Nuclear Matter and Neutron stars in a Parity Doublet Model
• An effective model for the QCD phase transitions at finite baryon density
• Higher-order baryon number susceptibilities: interplay between the chiral and the nuclear liquid-gas transitions
• Chiral symmetry restoration by parity doubling and the structure of neutron stars
• Dilaton-Limit Fixed Point in Hidden Local Symmetric Parity Doublet Model
• Conformal anomaly and the vector coupling in dense matter
• Interplay between ω-Nucleon Interaction and Nucleon Mass in Dense Baryonic Matter
• The application of the Quark-Hadron Chiral Parity-Doublet Model to neutron star matter
• Effective repulsion in dense quark matter from non-perturbative gluon exchange
• Neutron stars within the SU(2) parity doublet model
• Toward a unified equation of state for multi-messenger astronomy
• Constraint to chiral invariant masses of nucleons from GW170817 in an extended parity doublet model
• Parity Doubling and the Dense Matter Phase Diagram under Constraints from Multi-Messenger Astronomy
• Net-baryon number fluctuations in the Hybrid Quark-Meson-Nucleon model at finite density
• Catalysis of partial chiral symmetry restoration by Delta matter
• Examination of $N^{\ast }(1535)$ as a probe to observe the partial restoration of chiral symmetry in nuclear matter
• Chiral partner structure of light nucleons in an extended parity doublet model
• Dual chiral density waves in nuclear matter

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• Twin stars as probes of the nuclear equation of state: effects of rotation through the PSR J0952-0607 pulsar and constraints via the tidal deformability from the GW170817 event
• Chiral symmetry restoration and the $\Delta$ matter formation in neutron stars
• Two first-order phase transitions in hybrid compact stars: higher-order multiplet stars, reaction modes and intermediate conversion speeds
• Structure in the speed of sound: from neutron stars to heavy-ion collisions
• Reconciling multi-messenger constraints with chiral symmetry restoration
• Chiral condensates for neutron stars in hadron-quark crossover: from a parity doublet nucleon model to an NJL quark model
• Impacts of anomaly on nuclear and neutron star equation of state based on a parity doublet model
• Neutron star matter based on a parity doublet model including the $a_0(980)$ meson
• Fluctuations near the liquid-gas and chiral phase transitions in hadronic matter
• Fluctuations and correlations of baryonic chiral partners
• Novel Scalings of Neutron Star Properties from Analyzing Dimensionless Tolman--Oppenheimer--Volkoff Equations
• Non-equilibrium effects on stability of hybrid stars with first-order phase transitions
• Hybrid stars with large quark cores within the parity doublet model and modified NJL model
• Sound velocity peak induced by the chiral partner in dense two-color QCD
• Strong Gravity Extruding Peaks in Speed of Sound Profiles of Massive Neutron Stars
• Anatomy of critical fluctuations in hadronic matter
• Investigating the Impact of Higher-Order Phase Transitions in Binary Neutron-Star Mergers
• Emergent chirality and superfluidity of parity-doubled baryons in neutron stars
• Chiral condensates for neutron stars in hadron-quark crossover; from a parity doublet nucleon model to an NJL quark model
• Constraining the competition between the deconfinement and chiral phase transitions in light of the multimessenger era
• Parity-doubled nucleons can rapidly cool neutron stars
• Thermal quarks and Polyakov loops in two-color dense QCD
• Recurring region for neutron-star observables
• Bayesian Constraints on the Neutron Star Equation of State with a Smooth Hadron-Quark Crossover