Compact stars with a quark core within NJL model
Nuclear Theory
2014-11-20 v1
Abstract
An ultraviolet cutoff dependent on the chemical potential as proposed by Casalbuoni {\it et al} is used in the su(3) Nambu-Jona-Lasinio model. The model is applied to the description of stellar quark matter and compact stars. It is shown that with a new cutoff parametrization it is possible to obtain stable hybrid stars with a quark core. A larger cutoff at finite densities leads to a partial chiral symmetry restoration of quark at lower densities. A direct consequence is the onset of the quark in stellar matter at lower densities and a softening of the equation of state.
Cite
@article{arxiv.1001.3169,
title = {Compact stars with a quark core within NJL model},
author = {C. H. Lenzi and A. S. Schneider and C. Providência and R. M. Marinho},
journal= {arXiv preprint arXiv:1001.3169},
year = {2014}
}
Comments
9 pages, 12 figures