Nuclear Matter and Neutron stars in a Parity Doublet Model

Details Nuclear Matter and Neutron stars in a Parity Doublet Model Nuclear Matter and Neutron stars in a Parity Doublet Model

2007-10-23

arxiv.org/abs/0710.4192v1

Phys.Rev.C77:025803,2008

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1103/PhysRevC.77.025803

We investigate the properties of isospin-symmetric nuclear matter and neutron stars in a chiral model approach adopting the SU(2) parity doublet formulation. This ansatz explicitly incorporates chiral symmetry restoration with the limit of degenerate masses of the nucleons and their parity partners. Instead of searching for an optimized parameter set we explore the general parameter dependence of nuclear matter and star properties in the model. We are able to get a good description of ground state nuclear matter as well as large values of mass for neutron stars in agreement with observation.

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