Neutron stars in a Skyrme model with hyperons

Abstract

Available Skyrme parametrizations with hyperons are examined from the point of view of their suitability for applications to neutron stars. It is shown that the hyperons can attenuate or even remove the problem of ferromagnetic instability common to (nearly) all Skyrme parametrizations of the nucleon-nucleon interaction. At high density the results are very sensitive to the choice of the Lambda-Lambda interaction. The selected parameter sets are then used to obtain the resulting properties of both cold neutron stars and hot protoneutron stars. The general features known from other models are recovered.

27 pages, 9 figures

References in corpus (21)

• Composition and Structure of Protoneutron Stars
• Evolution of Protoneutron Stars
• Gravitationally redshifted absorption lines in the X-ray burst spectra of a neutron star
• Hyperon stars in the Brueckner-Bethe-Goldstone theory
• Neutrino Interactions in Hot and Dense Matter
• Properties of Strange Hadronic Matter in Bulk and in Finite Systems
• Effects of Strong and Electromagnetic Correlations on Neutrino Interactions in Dense Matter
• Gamow-Teller strength and the spin-isospin coupling constants of the Skyrme energy functional
• An Effective Equation of State for Dense Matter with Strangeness
• Hyperon-hyperon interactions and properties of neutron matter
• Constraints on $\Sigma$ Nucleus Dynamics from Dirac Phenomenology of ${\Sigma }^{-}$ Atoms
• Instabilities of infinite matter with effective Skyrme-type interactions
• Equation of state and magnetic susceptibility of spin polarized isospin asymmetric nuclear matter
• Neutrino propagation and spin zero sound in hot neutron matter with Skyrme interactions
• Landau parameters of nuclear matter in the spin and spin-isospin channels
• Mixedness in Bell-violation vs. Entanglement of Formation
• Generalized Fermi-Dirac Functions and Derivatives: Properties and Evaluation
• Ferromagnetism of Nuclear Matter in the Relativistic Approach
• Lambda-Lambda bond energy from the Nijmegen potentials
• Nuclear symmetry energy in presence of hyperons in the nonrelativistic Thomas-Fermi approximation
• Neutrino scattering rates in the presence of hyperons from a Skyrme model in the RPA approximation

Cited by in corpus (14)

• On the appearance of hyperons in neutron stars
• Non-rotating and rotating neutron stars in the extended field theoretical model
• A study of Lambda hypernuclei within the Skyrme-Hartree-Fock Model
• Kaon Condensation in Neutron Stars with Skyrme-Hartree-Fock Models
• Equations of state and stability of color-superconducting quark matter cores in hybrid stars
• Consistent Skyrme parametrizations constrained by GW170817
• Hyperons and quarks in proto-neutron stars
• Stable configurations of hybrid stars with colour-flavour-locked core
• Effective interactions of hyperons and mass-radius relation of neutron stars
• Neutrino scattering rates in the presence of hyperons from a Skyrme model in the RPA approximation
• Correlations in hypernuclear matter
• Double-Lambda hypernuclei within a Skyrme-Hartree-Fock approach
• Exploring Hyperon Skyrme Forces in Multi-$\Lambda$ Hypernuclei and Neutron Star Matter
• Neutrino mean free path in neutron stars in the presence of hyperons