Compact stars within an asy-soft quark-meson-coupling model
Nuclear Theory
2015-05-30 v2 Solar and Stellar Astrophysics
Abstract
We investigate compact star properties within the quark meson coupling model (QMC) with a soft symmetry energy density dependence at large densities. In particular, the hyperon content and the mass/radius curves for the families of stars obtained within the model are discussed. The hyperon-meson couplings are chosen according to experimental values of the hyperon nuclear matter potentials, and possible uncertainties are considered. It is shown that a softer symmetry energy gives rise to stars with less hyperons, smaller radii and larger masses. Hyperon-meson couplings may also have a strong effect on the mass of the star.
Cite
@article{arxiv.1110.4708,
title = {Compact stars within an asy-soft quark-meson-coupling model},
author = {Prafulla K. Panda and Alexandre M. S. Santos and Débora P. Menezes and Constança Providência},
journal= {arXiv preprint arXiv:1110.4708},
year = {2015}
}
Comments
7 pages, revtex, accepted in Phys. Rev. C