Hybrid stars with the Dyson-Schwinger quark model
Nuclear Theory
2011-11-23 v2 Solar and Stellar Astrophysics
High Energy Physics - Phenomenology
Abstract
We study the hadron-quark phase transition in the interior of neutron stars. For the hadronic sector, we use 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 employ the Dyson-Schwinger approach and compare with the MIT bag model. We calculate the structure of neutron star interiors comprising both phases and find that with the Dyson-Schwinger model, the hadron-quark phase transition takes place only when hyperons are excluded, and that a two-solar-mass hybrid star is possible only if the nucleonic equation of state is stiff enough.
Keywords
Cite
@article{arxiv.1107.2497,
title = {Hybrid stars with the Dyson-Schwinger quark model},
author = {H. Chen and M. Baldo and G. F. Burgio and H. -J. Schulze},
journal= {arXiv preprint arXiv:1107.2497},
year = {2011}
}
Comments
10 pages, 8 figures