An analytic parametrization of the hypernuclear matter equation of state

Abstract

An analytic parametrization of the cold hypernuclear matter equation of state based on microscopic Brueckner–Hartree–Fock calculations is constructed using realistic nucleon-nucleon and hyperon-nucleon interactions. The parametrization is based on a simple phase-space analysis and reproduces with good accuracy the results of the microscopic calculations with a small number of parameters. This parametrization allows for rapid calculations that accurately mimic the microscopic results, being therefore very useful from a practical point of view. As an example, we determine the composition and some properties of neutron stars, such as mass-radius relation, tidal deformability and moment of inertia, using the equation of state derived from this parametrization.