Phase transition and hybrid star in a SU(2) chiral sigma model

Details Phase transition and hybrid star in a SU(2) chiral sigma model Phase transition and hybrid star in a SU(2) chiral sigma model

2002-09-27

arxiv.org/abs/nucl-th/0209092v3

Mod.Phys.Lett. A17 (2002) 2633-2646

Physics

Nuclear Physics

Nuclear Theory

19 pages, 9 figures, accepted for Mod. Phys. Letts. A

Scientific paper

10.1142/S0217732302009295

We use a modified SU(2) chiral sigma model to study nuclear matter at high density using mean field approach. We also study the phase transition of nuclear matter to quark matter in the interior of highly dense neutron stars. Stable solutions of Tolman-Oppenheimer-Volkoff equations representing hybrid stars are obtained with a maximum mass of 1.69 $M_{\odot}$, radii around 9.3 kms and a quark matter core constituting nearly 55-85 % of the star radii.

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