Constraints on the quark matter equation of state from astrophysical observations
Nuclear Theory
2013-05-06 v1 Solar and Stellar Astrophysics
Abstract
We calculate the structure of neutron star interiors comprising both the hadronic and the quark phases. For the hadronic sector we employ a microscopic equation of state involving nucleons and hyperons derived within the Brueckner-Hartree-Fock many-body theory with realistic two-body and three-body forces. For the description of quark matter, we use several different models, e.g. the MIT bag, the Nambu--Jona-Lasinio (NJL), the Color Dielectric (CDM), the Field Correlator method (FCM), and one based on the Dyson-Schwinger model (DSM). We find that a two solar mass hybrid star is possible only if the nucleonic EOS is stiff enough.
Keywords
Cite
@article{arxiv.1301.4060,
title = {Constraints on the quark matter equation of state from astrophysical observations},
author = {G. F. Burgio and H. Chen and H. -J. Schulze and G. Taranto},
journal= {arXiv preprint arXiv:1301.4060},
year = {2013}
}
Comments
8 pages, 3 figures. Talk given at "Xth Quark Confinement and the Hadron Spectrum", Munich, 8-12 October, 2012