A Novel Approach to Model Hybrid Stars

Details A Novel Approach to Model Hybrid Stars A Novel Approach to Model Hybrid Stars

2009-01-13

arxiv.org/abs/0901.1748v4

Phys.Rev.C81:045201,2010

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Scientific paper

10.1103/PhysRevC.81.045201

We extend the hadronic SU(3) non-linear sigma model to include quark degrees of freedom. The choice of potential for the Polyakov loop 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 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.

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