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artículo con referato
"Hybrid stars within a covariant, nonlocal chiral quark model"
D.B. Blaschke, D. Gómez Dumm, A.G. Grunfeld, T. Klahn and N.N. Scoccola
Phys. Rev. C 75(6) (2007) 065804/1-7
We present a hybrid equation of state (EoS) for dense matter in which a nuclear matter phase is described within the Dirac-Brueckner-Hartree-Fock (DBHF) approach and a two-flavor quark matter phase is modelled according to a recently developed covariant, nonlocal chiral quark model. We show that modern observational constraints for compact star masses (M ~ 2Mo) can be satisfied when a small vector-like four quark interaction is taken into account. The corresponding isospin symmetric EoS is consistent with flow data analyses of heavy ion collisions and points to a deconfinement transition at about 0.55 fm-3.
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