On the appearance of hyperons in neutron stars
Nuclear Theory
2014-11-18 v3 Astrophysics
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
By employing a recently constructed hyperon-nucleon potential the equation of state of \beta-equilibrated and charge neutral nucleonic matter is calculated. The hyperon-nucleon potential is a low-momentum potential which is obtained within a renormalization group framework. Based on the Hartree-Fock approximation at zero temperature the densities at which hyperons appear in neutron stars are estimated. For several different bare hyperon-nucleon potentials and a wide range of nuclear matter parameters it is found that hyperons in neutron stars are always present. These findings have profound consequences for the mass and radius of neutron stars.
Keywords
Cite
@article{arxiv.0811.2939,
title = {On the appearance of hyperons in neutron stars},
author = {Haris Djapo and Bernd-Jochen Schaefer and Jochen Wambach},
journal= {arXiv preprint arXiv:0811.2939},
year = {2014}
}
Comments
12 pages, 12 figures, RevTeX4; summary and conclusions are strengthened, to appear in PRC