Structure of hybrid protoneutron stars within the Nambu--Jona-Lasinio model
Astrophysics
2008-11-26 v2 Nuclear Theory
Abstract
We investigate the structure of protoneutron stars (PNS) formed by hadronic and quark matter in -equilibrium described by appropriate equations of state (EOS). For the hadronic matter, we use a finite temperature EOS based on the Brueckner-Bethe-Goldstone many-body theory, with realistic two- and three-body forces. For the quark sector, we employ the Nambu--Jona-Lasinio model. We find that the maximum allowed masses are comprised in a narrow range around 1.8 solar masses, with a slight dependence on the temperature. Metastable hybrid protoneutron stars are not found.
Keywords
Cite
@article{arxiv.0710.5384,
title = {Structure of hybrid protoneutron stars within the Nambu--Jona-Lasinio model},
author = {G. F. Burgio and S. Plumari},
journal= {arXiv preprint arXiv:0710.5384},
year = {2008}
}
Comments
7 pages, 6 figures, revised version accepted for publication in Phys. Rev. D