Mimetic Black Holes
Abstract
In this paper, we look for the vacuum static spherically symmetric solution in the mimetic gravity scenario based on the conformal invariance principle. The trivial solution is a stealth Schwarzschild black hole with scalar hair where the mimetic field does not contribute to the background. However, a solution with two naked singularities shows up when the mimetic scalar field contributes to the background. We show that one of these singularities is the same as the singularity at the center of standard Schwarzschild black hole while the other appears due to caustics formation. However, we construct the mimetic black hole solution by gluing the exterior static spherically symmetric solution to a time-dependent anisotropic spacetime describing the interior of the black hole. It is shown that these two solutions match continuously on the surface of the apparent horizon. Some physical properties of the corresponding mimetic black holes are discussed.
Cite
@article{arxiv.1912.04636,
title = {Mimetic Black Holes},
author = {Mohammad Ali Gorji and Alireza Allahyari and Mohsen Khodadi and Hassan Firouzjahi},
journal= {arXiv preprint arXiv:1912.04636},
year = {2020}
}
Comments
26 pages, 4 figures, matches published version