Periodic Box FHNC calculations of neutron star crustal matter. (I)

TL;DR

This paper extends the periodic-box FHNC method to include isospin dependence, enabling realistic studies of asymmetric neutron star crust matter and providing insights into symmetry energy and neutron star equations of state.

Contribution

It introduces an extension of the FHNC method to account for isospin dependence, allowing for more realistic modeling of neutron star crustal matter.

Findings

Calculated symmetry energy values.

Determined low-density neutron star equation of state.

Analyzed single particle neutron and proton energies.

Abstract

Neutron star crustal matter, whose properties are relevant in many models aimed at explaining observed astrophysical phenomena, has so far always been studied using a mean field approach. In order to check the results obtained in this way, a sensible next step is to make use of a realistic nuclear potential. The present paper extends the periodic-box Fermi HyperNetted Chain method to include longitudinal-isospin dependence of the correlations, making feasible a study of asymmetric crustal matter. Results are presented for the symmetry energy, the low-density neutron star equation of state and the single particle neutron and proton energies.