The hadron-quark phase transition in neutron stars

Abstract

We study the hadron-quark phase transition in the interior of neutron stars (NS). For the hadronic sector, we use a microscopic equation of state (EOS) involving nucleons and hyperons derived within the Brueckner-Hartree-Fock approach. For the quark sector, we employ the MIT bag model, as well as the Nambu--Jona-Lasinio (NJL) and the Color Dielectric (CD) models, and find that the NS maximum masses lie in the interval between 1.5 and 1.8 solar masses.

Comments: Talk given at the 18th International Nuclear Physics Divisional Conference of the EPS, Prague, 23-29 August, 2004. To be published in Nuclear Physics A. 4 pages, 1 eps figure