Spherically Symmetric Configurations in Unimodular Gravity
General Relativity and Quantum Cosmology
2023-10-31 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
Unimodular gravity (UG) is considered, under many aspects, equivalent to General Relativity (GR), even if the theory is invariant under a more restricted diffeomorphic class of transformations. We discuss the conditions for the equivalence between the two formulations by applying the UG to the static and spherically symmetric configurations being the energy-momentum tensor sourced by a scalar field or by the electromagnetic field. We argue that the equivalence between UG and GR may be broken when analyzing the stability of the solutions at perturbative level.
Cite
@article{arxiv.2310.19037,
title = {Spherically Symmetric Configurations in Unimodular Gravity},
author = {Júlio C. Fabris and Mahamadou Hamani Daouda and Hermano Velten},
journal= {arXiv preprint arXiv:2310.19037},
year = {2023}
}
Comments
12 pages, latex file