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arXiv · 1301.4060

Constraints on the quark matter equation of state from astrophysical observations

G. F. Burgio·H. Chen·H. -J. Schulze·G. Taranto
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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.

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G. F. Burgio, H. Chen, H. -J. Schulze, G. Taranto. 2013-01-17. Constraints on the quark matter equation of state from astrophysical observations. https://arxiv.org/abs/1301.4060

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