Building a realistic neutron star from holography

نویسندگان

چکیده

We employ the recently improved description of dense baryonic matter within Witten-Sakai-Sugimoto model to construct neutron stars. In contrast previous holographic approaches, presence an isospin asymmetry allows us implement beta equilibrium and electric charge neutrality. As a consequence, we are able crust star same formalism compute location crust-core transition dynamically. After showing that simple pointlike approximation for baryons fails satisfy astrophysical constraints, demonstrate our does account stars meet current experimental constraints mass, radius, tidal deformability. However, also point out tensions in parameter fit large-$N_c$ artifacts discuss how potentially resolve them future.

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ژورنال

عنوان ژورنال: Physical review

سال: 2022

ISSN: ['0556-2813', '1538-4497', '1089-490X']

DOI: https://doi.org/10.1103/physrevd.105.034022