2009/01/31 by Verônica Dexheimer, V. A. Dexheimer, S. Schramm · 7 citations
Earth and Planetary Sciences · Physics and Astronomy · #High-Energy Particle Collisions Research #High-pressure geophysics and materials #Pulsars and Gravitational Waves Research #astro-ph.HE #astro-ph.SR #hep-ph
paper · pdf · doi:10.1103/physrevc.81.045201
published as Phys.Rev.C81:045201,2010
arxiv created 2010/03/30 · openalex publication_date 2010/04/13 · arxiv updated 2010/04/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We extend the hadronic SU(3) nonlinear \ensuremathσ model to include quark degrees of freedom. The choice of potential for the deconfinement order parameter as a function of temperature and chemical potential allows us to construct a realistic phase diagram from the analysis of the order parameters of the system. These parameters are the chiral condensate for the chiral symmetry restoration, and the scalar field \ensuremathΦ (as an effective field related to the Polyakov loop) for the deconfinement to quark matter. Besides reproducing lattice QCD results, for zero and low chemical potential, we are in agreement with neutron-star observations for zero temperature.