http://arxiv.org/abs/2212.02273
The properties of neutron stars are studied in a composite model of the strong interaction. In the regime of low to medium baryonic densities a covariant hadronic model is adopted which includes an effective hyperon-hyperon vertex. The presence of free quarks in the core of the star is considered by using the Nambu-Jona Lasinio model supplemented with a vector interaction. The deconfinement process is described by a continuous coexistence of phases. Several structure parameters of neutron stars, such as mass-radius relation, moment of inertia, tidal deformability, and the propagation of nonradial f and g-modes within the relativistic Cowling approximation are studied. The predictions of the model are in good agreement with recent observational data.
R. Aguirre
Tue, 6 Dec 22
21/87
Comments: 31 pages, 9 figures. arXiv admin note: text overlap with arXiv:2204.05221
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