Isospin- and momentum-dependent effective interactions for the baryon octet and the properties of hybrid stars

Abstract

The isospin- and momentum-dependent MDI interaction, which has been extensively used in intermediate-energy heavy-ion reactions to study the properties of asymmetric nuclear matter, is extended to include the nucleon-hyperon and hyperon-hyperon interactions by assuming same density, momentum and isospin dependence as for the nucleon-nucleon interaction. The parameters in these interactions are determined from the empirical hyperon single-particle potentials in symmetric nuclear matter at saturation density. The extended MDI interaction is then used to study in the mean-field approximation the equation of state of hypernuclear matter and also the properties of hybrid stars by including the phase transition from the hypernuclear matter to the quark matter at high densities. In particular, the effects of attractive and repulsive $\Sigma$N interactions and different values of symmetry energies on the hybrid star properties are investigated.

13 pages, 12 figures, version to appear in Phys. Rev. C

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• Hybrid stars within a covariant, nonlocal chiral quark model
• Quark deconfinement transition in hyperonic matter
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• Observational constraints on quark matter in neutron stars

Cited by in corpus (27)

• Single-nucleon potential decomposition of the nuclear symmetry energy
• Thermal properties of asymmetric nuclear matter with an improved isospin- and momentum-dependent interaction
• Hybrid Stars using the Quark-Meson Coupling and Proper Time NJL Models
• Probing isospin- and momentum-dependent nuclear effective interactions in neutron-rich matter
• Finite-size effects on the hadron-quark phase transition in neutron stars
• Nuclear symmetry energy and hadron-quark mixed phase in neutron stars
• Phase diagrams in the Hadron-PNJL model
• Influence of vector interactions on the hadron-quark/gluon phase transition
• Hadron-quark mixed phase in the quark-meson coupling model
• Isospin properties of quark matter from a 3-flavor NJL model
• Hadron-quark Pasta Phase in Massive Neutron Stars
• Hadron-quark phase transition in asymmetric matter with dynamical quark masses
• Breaking the EOS-Gravity Degeneracy with Masses and Pulsating Frequencies of Neutron Stars
• Symmetry energy effects on the properties of hybrid stars
• Phase transition of strongly interacting matter with a chemical potential dependent Polyakov loop potential
• Phase transitions of hadronic to quark matter at finite T and μ_B
• Nonparametric model for the equations of state of neutron star from deep neural network
• Imprints of Nuclear Symmetry Energy on Properties of Neutron Stars
• Properties of quark matter and hybrid stars from a quasiparticle model
• Energy release from hadron-quark phase transition in neutron stars and the axial $w$-mode of gravitational waves
• Effects of the U-boson on the inner edge of neutron star crusts
• Hyperon and nuclear symmetry energy in the neutron star
• Properties of quark-matter cores in massive hybrid stars
• Equation of state and hybrid star properties with the weakly interacting light U-boson in relativistic models
• One possible mechanism for massive neutron star supported by soft EOS
• Anisotropic Stars in the Non-minimal $Y(R)F^2$ Gravity
• Production and rescattering of strange baryons at SPS energies in a transport model with hadron potentials