Charged black holes in string-inspired gravity II. Mass inflation and dependence on parameters and potentials
Abstract
We investigate the relation between the existence of mass inflation and model parameters of string-inspired gravity models. In order to cover various models, we investigate a Brans-Dicke theory that is coupled to a U(1) gauge field. By tuning a model parameter that decides the coupling between the Brans-Dicke field and the electromagnetic field, we can make both of models such that the Brans-Dicke field is biased toward strong or weak coupling directions after gravitational collapses. We observe that as long as the Brans-Dicke field is biased toward any (strong or weak) directions, there is no Cauchy horizon and no mass inflation. Therefore, we conclude that to induce a Cauchy horizon and mass inflation inside a charged black hole, either there is no bias of the Brans-Dicke field as well as no Brans-Dicke hair outside the horizon or such a biased Brans-Dicke field should be well trapped and controlled by a potential.
- Authors:
-
- KISTI, Daejeon 305-806 (Korea, Republic of)
- Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, Taipei 10617, Taiwan (China)
- Publication Date:
- OSTI Identifier:
- 22525453
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Cosmology and Astroparticle Physics
- Additional Journal Information:
- Journal Volume: 2015; Journal Issue: 09; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BLACK HOLES; BRANES; COSMOLOGICAL INFLATION; COUPLING; ELECTROMAGNETIC FIELDS; GRAVITATIONAL COLLAPSE; INFLATIONARY UNIVERSE; MASS; POTENTIALS; TRAPPING; U-1 GROUPS
Citation Formats
Hansen, Jakob, and Yeom, Dong-han. Charged black holes in string-inspired gravity II. Mass inflation and dependence on parameters and potentials. United States: N. p., 2015.
Web. doi:10.1088/1475-7516/2015/09/019.
Hansen, Jakob, & Yeom, Dong-han. Charged black holes in string-inspired gravity II. Mass inflation and dependence on parameters and potentials. United States. https://doi.org/10.1088/1475-7516/2015/09/019
Hansen, Jakob, and Yeom, Dong-han. 2015.
"Charged black holes in string-inspired gravity II. Mass inflation and dependence on parameters and potentials". United States. https://doi.org/10.1088/1475-7516/2015/09/019.
@article{osti_22525453,
title = {Charged black holes in string-inspired gravity II. Mass inflation and dependence on parameters and potentials},
author = {Hansen, Jakob and Yeom, Dong-han},
abstractNote = {We investigate the relation between the existence of mass inflation and model parameters of string-inspired gravity models. In order to cover various models, we investigate a Brans-Dicke theory that is coupled to a U(1) gauge field. By tuning a model parameter that decides the coupling between the Brans-Dicke field and the electromagnetic field, we can make both of models such that the Brans-Dicke field is biased toward strong or weak coupling directions after gravitational collapses. We observe that as long as the Brans-Dicke field is biased toward any (strong or weak) directions, there is no Cauchy horizon and no mass inflation. Therefore, we conclude that to induce a Cauchy horizon and mass inflation inside a charged black hole, either there is no bias of the Brans-Dicke field as well as no Brans-Dicke hair outside the horizon or such a biased Brans-Dicke field should be well trapped and controlled by a potential.},
doi = {10.1088/1475-7516/2015/09/019},
url = {https://www.osti.gov/biblio/22525453},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 09,
volume = 2015,
place = {United States},
year = {Tue Sep 01 00:00:00 EDT 2015},
month = {Tue Sep 01 00:00:00 EDT 2015}
}