Constraints on the quark matter equation of state from astrophysical observations. (arXiv:1301.4060v1 [nucl-th])

Constraints on the quark matter equation of state from astrophysical observations. (arXiv:1301.4060v1 [nucl-th]):
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.