Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2007-03-27
Phys.Rev.C75:065804,2007
Physics
Nuclear Physics
Nuclear Theory
9 pages, 3 figures, references added, Phys. Rev. C accepted for publication
Scientific paper
10.1103/PhysRevC.75.065804
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 ~ 2 M_sun) 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.
Blaschke David B.
Dumm Daniel Gomez
Grunfeld A. G.
Klahn Thomas
Scoccola Norberto N.
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