Massive neutron star with strangeness in a relativistic mean-field model with a high-density cut-off

Abstract

The properties of strangeness neutron star are studied within relativistic mean-field (RMF) model via including a logarithmic interaction as a function of scalar meson field. This logarithmic interaction, named as the $\sigma$-cut potential, can largely reduce the attractive contributions of scalar meson field at high density without any influence on nuclear structure around normal saturation density. In this work, the TM1 parameter set is chosen as the RMF interaction, while the strengths of logarithmic interaction are constrained by the properties of finite nuclei so that we can obtain a reasonable effective nucleon-nucleon interaction. The hyperons, $\Lambda ,\Sigma$, and $\Xi$ are also considered in neutron stars within this framework, whose coupling constants with mesons are determined by the latest hyperon-nucleon and $\Lambda$-$\Lambda$ potentials extracted from the experimental data of hypernuclei. The maximum mass of neutron star can be larger than two solar mass with these hyperons. Furthermore, the nucleon mass at high density will be saturated due to this additional $\sigma$-cut potential, which is consistent with the conclusions from the microscopic calculations such as, Brueckner-Hartree-Fock theory and quark mean-field model.

arXiv comment18 pages, 6 figures, 2 tables, accepted to Phys. Rev. C

References in corpus (32)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions
• The Shell Model as Unified View of Nuclear Structure
• Equations of state for supernovae and compact stars
• Relativistic Continuum Hartree Bogoliubov Theory for Ground State Properties of Exotic Nuclei
• Quantum Monte Carlo methods for nuclear physics
• The NANOGrav Nine-year Data Set: Mass and Geometric Measurements of Binary Millisecond Pulsars
• Skyrme Interaction and Nuclear Matter Constraints
• Relativistic Nuclear Energy Density Functionals: Mean-Field and Beyond
• The Equation of State of Hot, Dense Matter and Neutron Stars
• Coupled-cluster computations of atomic nuclei
• Relativistic Mean-Field Hadronic Models under Nuclear Matter Constraints
• Self-consistent Green's function method for nuclei and nuclear matter
• The Skyrme Interaction in finite nuclei and nuclear matter
• Hyperons and massive neutron stars: vector repulsion and SU(3) symmetry
• Lattice simulations for few- and many-body systems
• The Nuclear Symmetry Energy
• Surface Symmetry Energy
• Hyperon mixing and universal many-body repulsion in neutron stars
• (No) neutron star maximum mass constraint from hypernuclei
• Binding of Hypernuclei in the Latest Quark-Meson Coupling Model
• Complete relativistic equation of state for neutron stars
• Nucleon effective masses within the Brueckner-Hartree-Fock theory: Impact on stellar neutrino emission
• Stellar properties and nuclear matter constraints
• Multi-pomeron repulsion and the Neutron-star mass
• Delta isobars in relativistic mean-field models with $\sigma$-scaled hadron masses and couplings
• Relativistic Brueckner-Hartree-Fock theory for finite nuclei
• Nuclear matter properties with nucleon-nucleon forces up to fifth order in the chiral expansion
• Making a soft relativistic mean-field equation of state stiffer at high density
• A new tool in nuclear physics: Nuclear lattice simulations
• The quark mean field model with pion and gluon corrections

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