A new consistent Neutron Star Equation of State from a Generalized Skyrme model

Abstract

We propose a new equation of state for nuclear matter based on a generalized Skyrme model which is consistent with all current constraints on the observed properties of neutron stars. This generalized model depends only on two free parameters related to the ranges of pressure values at which different submodels are dominant, and which can be adjusted so that mass-radius and deformability constraints from astrophysical and gravitational wave measurements can be met. Our results support the Skyrme model and its generalizations as good candidates for a low energy effective field-theoretic description of nuclear matter even at extreme conditions such as those inside neutron stars.

arXiv comment8 pages, 3 figures. Minor typos fixed. Version accepted for publication in Phys. Lett. B

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• Dense matter equation of state and phase transitions from a Generalized Skyrme model
• Incompressibility and Symmetry Energy of Neutron Star
• Kaon condensation in skyrmion matter and compact stars
• Generalized skyrmion crystals with applications to neutron stars
• A consistent two-skyrmion configuration space from instantons
• Isospin asymmetry and neutron stars in V-QCD
• Compressibility of dense nuclear matter in the $\rho$-meson variant of the Skyrme model
• Systematic study for the surface properties of neutron star