Equation of state of strongly magnetized matter with hyperons and $\Delta$-resonances

Abstract

We construct a new equation of state for the baryonic matter under an intense magnetic field within the framework of covariant density functional theory. The composition of matter includes hyperons as well as $\Delta$-resonances. The extension of the nucleonic functional to the hypernuclear sector is constrained by the experimental data on $\Lambda$ and $\Xi$-hypernuclei. We find that the equation of state stiffens with the inclusion of the magnetic field, which increases the maximum mass of neutron star compared to the non-magnetic case. In addition, the strangeness fraction in the matter is enhanced. Several observables, like the Dirac effective mass, particle abundances, etc show typical oscillatory behavior as a function of the magnetic field and/or density which is traced back to the occupation pattern of Landau levels.

16 pages, 8 figures, Accepted in journal "Particles", Corrected some typos. Matches with published version

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• Heavy Magnetic Neutron Stars
• Hybrid stars are compatible with recent astrophysical observations
• Equation of state and composition of proto-neutron stars and merger remnants with hyperons
• Delta baryons in neutron stars
• Oscillating magnetised hybrid stars under the magnifying glass of multi-messenger observations
• Exploring the effects of Delta Baryons in magnetars
• Universal relations for compact stars with exotic degrees of freedom
• Baryonic dense matter in view of gravitational-wave observations
• Influence of the nuclear symmetry energy slope on observables of compact stars with $\Delta$-admixed hypernuclear matter
• (Anti)kaon condensation in strongly magnetized dense matter
• Neutron star structure with a new force between quarks
• Probing the impact of Delta-Baryons on Nuclear Matter and Non-Radial Oscillations in Neutron Stars
• Massive neutron stars as mass gap candidates: Exploring equation of state and magnetic field
• Oscillating Magnetized Color Superconducting Quark Stars
• Strongly interacting matter in extreme magnetic fields
• Effects of Phi and ${\sigma }^{\ast }$-meson on properties of hyperon stars including $\Delta$ resonance
• Tension between implications from PREX-2 data and gravitational tidal response on dense matter equation of state
• Kaon-meson coupling from SU(3) flavour symmetry and application to antikaon condensed dense matter in neutron star
• Effects of anisotropy on strongly magnetized neutron and strange quark stars in general relativity