Novel features of asymmetric nuclear matter from terrestrial experiments and astrophysical observations of neutron stars

Abstract

The accurate measurement of neutron skin thickness of ${}^{208}$Pb by the PREX Collaboration suggests a large value of the nuclear symmetry energy slope parameter, $L$, whereas the smaller $L$ is preferred to account for the small neutron-star radii from NICER observations. To resolve this discrepancy between nuclear experiments and astrophysical observations, new effective interactions have been developed using relativistic mean-field models with the isoscalar- and isovector-meson mixing. We investigate the effects of $\delta$-nucleon coupling and $\sigma$--$\delta$ mixing on the ground-state properties of finite nuclei, as well as the characteristics of isospin-asymmetric nuclear matter and neutron stars. Additionally, we explore the role of the quartic $\rho$-meson self-interaction in dense nuclear matter to mitigate the stiff equation of state for neutron stars resulting from the large $\delta$-nucleon coupling. It is found that the nuclear symmetry energy undergoes a sudden softening at approximately twice the saturation density of nuclear matter, taking into account the PREX-2 result, the recent NICER observation of PSR J0437$-$4715, and the binary neutron star merger, GW170817.

36 pages, 12 figures, 6 tables, matching to the version accepted for publication as a REVIEW article in Frontiers in Physics

References in corpus (114)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Shapiro delay measurement of a two solar mass neutron star
• GW170817: Measurements of Neutron Star Radii and Equation of State
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• 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
• A New Parameterization for the Lagrangian Density of Relativistic Mean Field Theory
• Determination of the Equation of State of Dense Matter
• Neutron Star Observations: Prognosis for Equation of State Constraints
• Tidal Love numbers of neutron stars
• Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions
• 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
• Gravitational-wave constraints on the neutron-star-matter Equation of State
• Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620
• Neutron Star Structure and the Neutron Radius of 208Pb
• Constraints on the symmetry energy and neutron skins from experiments and theory
• Neutron-Rich Nuclei in Heaven and Earth
• New constraints on radii and tidal deformabilities of neutron stars from GW170817
• Constraints on the density dependence of the symmetry energy
• Accurate Determination of the Neutron Skin Thickness of ${}^{208}$Pb through Parity-Violation in Electron Scattering
• The NANOGrav 11-year Data Set: High-precision timing of 45 Millisecond Pulsars
• Nuclear symmetry energy probed by neutron skin thickness of nuclei
• Implications of PREX-II on the equation of state of neutron-rich matter
• Complete electric dipole response and the neutron skin in 208Pb
• Relativistic Mean-Field Hadronic Models under Nuclear Matter Constraints
• Relativistic Mean-Field Theory and the High-Density Nuclear Equation of State
• Determination of the stiffness of the nuclear symmetry energy from isospin diffusion
• The Cooling of Compact Stars
• Relativistic Hartree-Bogoliubov model with density-dependent meson-nucleon couplings
• Parity Violating Measurements of Neutron Densities
• Relativistic effective interaction for nuclei, giant resonances, and neutron stars
• Kaon production in heavy ion reactions at intermediate energies
• Precision Determination of the Neutral Weak Form Factor of ${}^{48}$Ca
• Nuclear matter symmetry energy and the neutron skin thickness of heavy nuclei
• Nucleon-nucleon cross sections in neutron-rich matter and isospin transport in heavy-ion reactions at intermediate energies
• Building relativistic mean field models for finite nuclei and neutron stars
• A NICER View of the Nearest and Brightest Millisecond Pulsar: PSR J0437$\unicode{x2013}$4715
• The neutron radii of Lead and neutron stars
• Nuclear constraints on properties of neutron star crusts
• A quark-meson model for nuclear and neutron matter
• Nucleon and hadron structure changes in the nuclear medium and impact on observables
• Tidal deformability from GW170817 as a direct probe of the neutron star radius
• Neutron skin of ${}^{208}$Pb from Coherent Pion Photoproduction
• Progress in Constraining Nuclear Symmetry Energy Using Neutron Star Observables Since GW170817
• Higher-order effects on the incompressibility of isospin asymmetric nuclear matter
• Towards Understanding Astrophysical Effects of Nuclear Symmetry Energy
• GW190814: Impact of a 2.6 solar mass neutron star on nucleonic equations of state
• Electric dipole polarizability of ${}^{48}$Ca and implications for the neutron skin
• Neutron star tidal deformabilities constrained by nuclear theory and experiment
• Searching for isovector signatures in the neutron-rich oxygen and calcium isotopes
• Weak charge form factor and radius of 208Pb through parity violation in electron scattering
• Probing the Symmetry Energy with Heavy Ions
• Constraining URCA cooling of neutron stars from the neutron radius of 208Pb
• Probing the Symmetry Energy with the Spectral Pion Ratio
• Combined Constraints on the Equation of State of Dense Neutron-Rich Matter from Terrestrial Experiments and Observations of Neutron Stars
• Isospin-dependent properties of asymmetric nuclear matter in relativistic mean-field models
• Information content of the parity-violating asymmetry in ${}^{208}$Pb
• Constraints on Nuclear Symmetry Energy Parameters
• Bayesian Inference of High-density Nuclear Symmetry Energy from Radii of Canonical Neutron Stars
• New relativistic effective interaction for finite nuclei, infinite nuclear matter and neutron stars
• Equation of state for neutron stars in SU(3) flavor symmetry
• The nuclear symmetry energy and stability of matter in neutron star
• A new equation of state for neutron star matter with nuclei in the crust and hyperons in the core
• Strong correlations of neutron star radii with the slopes of nuclear matter incompressibility and symmetry energy at saturation
• Constraining the dense matter equation of state with new NICER mass-radius measurements and new chiral effective field theory inputs
• Sensitivity of the Moment of Inertia of Neutron Stars to the Equation of State of Neutron-Rich Matter
• Determination of the Equation of State from Nuclear Experiments and Neutron Star Observations
• Decoding the Density Dependence of the Nuclear Symmetry Energy
• Has a thick neutron skin in ${}^{208}$Pb been ruled out?
• The Nolen-Schiffer anomaly and isospin symmetry breaking in nuclear matter
• Effects of Fock term, tensor coupling and baryon structure variation on a neutron star
• Equation of state for neutron stars with hyperons and quarks in relativistic Hartree-Fock approximation
• Relativistic mean-field theories for neutron-star physics based on chiral effective field theory
• EoS for massive neutron stars
• Imprint of the symmetry energy on the inner crust and strangeness content of neutron stars
• Symmetry Energy Constraints from Giant Resonances: A Theoretical Overview
• Curvature-slope correlation of nuclear symmetry energy and its imprints on the crust-core transition, radius and tidal deformability of canonical neutron stars
• Sensitivity of Au+Au collisions to the symmetric nuclear matter equation of state at 2 -- 5 nuclear saturation densities
• Role of vector self-interaction in Neutron Star properties
• Constraints on the inner edge of neutron star crusts from relativistic nuclear energy density functionals
• Can the PREX-2 and CREX results be understood by relativistic mean-field models with the astrophysical constraints?
• Impact of NICER's Radius Measurement of PSR J0740+6620 on Nuclear Symmetry Energy at Suprasaturation Densities
• Asymmetric nuclear matter in relativistic mean-field models with isoscalar- and isovector-meson mixing
• Compiled Properties of Nucleonic Matter and Nuclear and Neutron Star Models from Non-Relativistic and Relativistic Interactions
• Systematic analysis of the impacts of symmetry energy parameters on neutron star properties
• Symmetry energy systematics and its high density behavior
• Relativistic mean field model for ultra-compact low mass neutron star of HESS J1731-347
• Quark-meson coupling model with the cloudy bag
• Cusp in the Symmetry Energy, Speed of Sound in Neutron Stars and Emergent Pseudo-Conformal Symmetry
• Lorentz covariant nucleon self-energy decomposition of the nuclear symmetry energy
• Bayesian refinement of covariant energy density functionals
• Neutron star mass formula with nuclear saturation parameters for asymmetric nuclear matter
• Exact versus Taylor-expanded energy density in the study of the neutron star crust-core transition
• Bayesian inference of neutron-star observables based on effective nuclear interactions
• Nuclear symmetry energy effects on neutron stars properties
• Astrophysics and Nuclear Physics Informed Interactions in Dense Matter: Inclusion of PSR J0437-4715
• Symmetry energy and neutron star properties constrained by chiral effective field theory calculations
• Influence of the interactions of scalar mesons on the behavior of the symmetry energy
• Revisiting the Hugenholtz-Van Hove theorem in nuclear matter
• Impact of The Newly Revised Gravitational Redshift of X-ray Burster GS 1826-24 on The Equation of State of Supradense Neutron-Rich Matter
• Empirical radius formulas for canonical neutron stars from bidirectionally selecting EOS features in extended Bayesian analyses of observational data
• Multilayer neutron stars with scalar mesons crossing term
• Topology change, emergent symmetries and compact star matter
• Scalar-vector Lagrangian without nonlinear self-interactions of bosonic fields in the relativistic mean-field theory
• Role of the symmetry energy slope in neutron stars: exploring the model-dependency
• Sigma-omega meson coupling and properties of nuclei and nuclear matter
• A Relativistic Quantum Approach to Neutrino and Antineutrino Emissions via the Direct Urca Process in Strongly Magnetized Neutron-Star Matter
• Core-crust transition properties of neutron stars within systematically varied extended relativistic mean-field model
• Effect of isoscalar and isovector scalar fields on baryon semileptonic decays in nuclear matter
• Massive neutron stars with small radii in relativistic mean-field models optimized to nuclear ground states

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