Modeling Hybrid Stars with an SU(3) non-linear sigma model
Solar and Stellar Astrophysics
2015-03-17 v3 High Energy Astrophysical Phenomena
Abstract
We study the behavior of hybrid stars using an extended hadronic and quark SU(3) non-linear sigma model. The degrees of freedom change naturally, in this model, from hadrons to quarks as the density/temperature increases. At zero temperature, we reproduce massive neutron stars containing a core of hybrid matter of 2 km for the non-rotating case and 1.18 km and 0.87 km, in the equatorial and polar directions respectively, for stars rotating at the Kepler frequency (physical cases lie in between). The cooling of such stars is also analyzed.
Keywords
Cite
@article{arxiv.1006.0380,
title = {Modeling Hybrid Stars with an SU(3) non-linear sigma model},
author = {Rodrigo Picanco Negreiros and V. A. Dexheimer and S. Schramm},
journal= {arXiv preprint arXiv:1006.0380},
year = {2015}
}
Comments
Revised version, references and figures added. Accepted for publication in Physical Review C