Chiral symmetry restoration and the $\Delta$ matter formation in neutron stars

Abstract

We analyze the effects of chiral symmetry restoration in hadronic matter, including the lowest-lying baryonic resonance $\Delta$ based on the parity doublet model. We study the role of $\Delta$ and its chiral partner on the equation of state (EoS) of dense matter under neutron star (NS) conditions of $\beta$-equilibrium and charge neutrality. We find that the softening of the EoS driven by the early onset of $\Delta$ matter due to partial restoration of chiral symmetry allows accommodating the modern multi-messenger astrophysical constraints on the mass, radius, and tidal deformability. The softening above the saturation density is accompanied by subsequent stiffening at high densities. We also find that the matter composition in the NS cores may be different upon variations of the repulsive interactions of $\Delta$ baryons in hadronic matter.

arXiv commentarXiv admin note: text overlap with arXiv:2110.11056, arXiv:2004.09566

References in corpus (80)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• 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
• Relativistic Shapiro delay measurements of an extremely massive millisecond pulsar
• Determination of the Equation of State of Dense Matter
• Tidal Love numbers of neutron stars
• Properties of the binary neutron star merger GW170817
• A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
• Equations of state for supernovae and compact stars
• Tidal deformability of neutron stars with realistic equations of state and their gravitational wave signatures in binary inspiral
• Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620
• Relativistic tidal properties of neutron stars
• Equation of state and neutron star properties constrained by nuclear physics and observation
• From hadrons to quarks in neutron stars: a review
• Relativistic theory of tidal Love numbers
• Evidence for quark-matter cores in massive neutron stars
• The NANOGrav Nine-year Data Set: Mass and Geometric Measurements of Binary Millisecond Pulsars
• I-Love-Q Relations in Neutron Stars and their Applications to Astrophysics, Gravitational Waves and Fundamental Physics
• Constraints on the high-density nuclear equation of state from the phenomenology of compact stars and heavy-ion collisions
• Astrophysical Constraints on the Symmetry Energy and the Neutron Skin of ${}^{208}$Pb with Minimal Modeling Assumptions
• Chiral Symmetry of Baryons
• Can very compact and very massive neutron stars both exist?
• Information content of the parity-violating asymmetry in ${}^{208}$Pb
• (No) neutron star maximum mass constraint from hypernuclei
• The hadronic SU(3) Parity Doublet Model for Dense Matter, its extension to quarks and the strange equation of state
• An effective chiral Hadron-Quark Equation of State
• Vacuum phenomenology of the chiral partner of the nucleon in a linear sigma model with vector mesons
• Solution of the Hyperon Puzzle within a Relativistic Mean-Field Model
• Light baryons below and above the deconfinement transition: medium effects and parity doubling
• Competition between delta isobars and hyperons and properties of compact stars
• Cold, dense nuclear matter in a SU(2) parity doublet model
• Critical Density and Impact of $\Delta (1232)$ Resonance Formation in Neutron Stars
• Chiral Symmetry Realization for Even- and Odd-parity Baryon Resonances
• Asymmetric nuclear matter in a parity doublet model with hidden local symmetry
• Implications from GW170817 for $\Delta$-isobar admixed hypernuclear compact stars
• Nuclear matter within a dilatation-invariant parity doublet model: the role of the tetraquark at nonzero density
• Nucleons and parity doubling across the deconfinement transition
• Thermodynamics of dense hadronic matter in a parity doublet model
• Hybrid Stars in an SU(3) Parity Doublet Model
• Nuclear Matter and Neutron stars in a Parity Doublet Model
• What do we learn about vector interactions from GW170817?
• Neutron stars with small radii -- the role of delta resonances
• Hyperons in thermal QCD: A lattice view
• Interplay between $\Delta$ Particles and Hyperons in Neutron Stars
• Relativistic hybrid stars in light of the NICER PSR J0740+6620 radius measurement
• Delta baryons and diquark formation in the cores of neutron stars
• Chiral symmetry restoration by parity doubling and the structure of neutron stars
• Higher-order baryon number susceptibilities: interplay between the chiral and the nuclear liquid-gas transitions
• An effective model for the QCD phase transitions at finite baryon density
• Cooling of hypernuclear compact stars
• Dilaton-Limit Fixed Point in Hidden Local Symmetric Parity Doublet Model
• Conformal anomaly and the vector coupling in dense matter
• Quark-hadron crossover equations of state for neutron stars: constraining the chiral invariant mass in a parity doublet model
• Dynamical Model of Coherent Pion Production in Neutrino-Nucleus Scattering
• $\Delta$ (1232) effects in density-dependent relativistic Hartree-Fock theory and neutron stars
• Many-body forces in the equation of state of hyperonic matter
• Electron and Photon induced Reactions on Nuclei in the Nucleon Resonance Region
• The Hyperon Puzzle in Neutron Stars
• Chiral Mirror-Baryon-Meson Model and Nuclear Matter beyond Mean-Field
• Rapidly rotating $\Delta$-resonance-admixed hypernuclear compact stars
• The application of the Quark-Hadron Chiral Parity-Doublet Model to neutron star matter
• Neutron star matter with strange interactions in a relativistic quark 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
• Neutron star mass limit at $2M_{\odot }$ supports the existence of a CEP
• Reconciling multi-messenger constraints with chiral symmetry restoration
• Casimir effect for nucleon parity doublets
• Do Delta Baryons Play a Role in Neutron Stars?
• Parity doubling of baryons in a chiral approach with three flavors
• Chiral condensates for neutron stars in hadron-quark crossover: from a parity doublet nucleon model to an NJL quark model
• Chiral partner structure of light nucleons in an extended parity doublet model
• Speed of sound and quark confinement inside neutron stars
• Variation of delta baryon mass and hybrid star properties in static and rotating conditions
• Interplay between chiral dynamics and repulsive interactions
• Properties of hadrons in a chiral model with (axial-)vector mesons

Cited by in corpus (13)

• Heavy Baryons in Compact Stars
• Reaching percolation and conformal limits in neutron stars
• Phase Transitions in Particle Physics -- Results and Perspectives from Lattice Quantum Chromo-Dynamics
• Delta baryons in neutron stars
• Neutron star matter based on a parity doublet model including the $a_0(980)$ meson
• Exploring the effects of Delta Baryons in magnetars
• Fluctuations near the liquid-gas and chiral phase transitions in hadronic matter
• Fluctuations and correlations of baryonic chiral partners
• Probing the impact of Delta-Baryons on Nuclear Matter and Non-Radial Oscillations in Neutron Stars
• Anatomy of critical fluctuations in hadronic matter
• Emergent chirality and superfluidity of parity-doubled baryons in neutron stars
• Influence of hyperon-hyperon interaction on the properties of neutron stars
• Parity-doubled nucleons can rapidly cool neutron stars