Relativistic stars in de Rham-Gabadadze-Tolley massive gravity

2015/12/31 by Taishi Katsuragawa, Shin'ichi Nojiri, Shin’ichi Nojiri +2 · 1 citation
Physics and Astronomy · #Astronomy #Astrophysics #Black Holes and Theoretical Physics #Classical mechanics #Cosmology and Gravitation Theories #General relativity #Gravitation #Graviton #Hydrostatic equilibrium #Massive gravity #Neutron star #Physics #Pulsars and Gravitational Waves Research #RADIUS #Theoretical physics #astro-ph.CO #gr-qc #hep-th

paper · pdf · doi:10.1103/physrevd.93.124013

published as Phys. Rev. D 93, 124013 (2016) · 15 pages, 5 figures, PRD version

arxiv created 2016/05/24 · openalex publication_date 2016/06/06 · arxiv updated 2016/06/15 · openalex created_date 2018/01/12 · openalex updated_date 2026/08/05

Abstract

We study relativistic stars in the simplest model of the de Rham-Gabadadze-Tolley massive gravity which describes the massive graviton without a ghost propagating mode. We consider the hydrostatic equilibrium and obtain the modified Tolman-Oppenheimer-Volkoff equation and the constraint equation coming from the potential terms in the gravitational action. We give analytical and numerical results for quark and neutron stars and discuss the deviations compared with general relativity and F(R) gravity. It is shown that the theory under investigation leads to a small deviation from general relativity in terms of density profiles and mass-radius relation. Nevertheless, such a deviation may be observable in future astrophysical probes.

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