Dynamical transition to spontaneous scalarization in neutron stars: The massive scalar field scenario

Autor:	Degollado, Juan Carlos, Ortiz, Néstor, Salgado, Marcelo
Rok vydání:	2024
Předmět:	General Relativity and Quantum Cosmology Astrophysics - High Energy Astrophysical Phenomena
Zdroj:	Phys. Rev. D 110, 084011. Published 2 October 2024
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.110.084011
Popis:	We analyze numerically the dynamical transition to spontaneous scalarization in neutron stars in the framework of a scalar-tensor theory of gravity where the scalar field is free but massive, and it is coupled nonminimally to gravity in the Jordan frame. We show that the quasistatic configuration of the star that settles after the transition can avoid the observational constraints imposed on the amount of scalarization by several observations in binary systems due to the presence of the mass term, which suppresses the range of the scalar field. We also study the impact of the scalar field mass on the total mass of the star relative to the massless scenario. Comment: 15 pages, 14 figures. Reviewed version. Matches published version in PRD
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2407.08124 Zobrazit plný text záznamu View this record from Arxiv