EPJ Web Conf.
Volume 168, 2018Joint International Conference of ICGAC-XIII and IK-15 on Gravitation, Astrophysics and Cosmology
|Number of page(s)||10|
|Published online||09 January 2018|
Remarks on non-singular black holes
Theoretical Physics Institute, Department of Physics Universityof Alberta, Edmonton, Alberta, Canada T6G 2E1
* e-mail: vfrolov @ ualbcrta.ca
Published online: 9 January 2018
We briefly discuss non-singular black hole models, with the main focus on the properties of non-singular evaporating black holes. Such black holes possess an apparent horizon, however the event horizon may be absent. In such a case, the information from the black hole interior may reach the external observer after the complete evaporation of the black hole. This model might be used for the resolution of the information loss puzzle. However, as we demonstrate, in a general case the quantum radiation emitted from the black hole interior, calculated in the given black hole background, is very large. This outburst of the radiation is exponentially large for models with the redshift function α = 1. We show that it can be suppressed by including a non-trivial redshift function. However, even this suppression is not enough to guarantee self-consistency of the model. This problem is a manifestation of a general problem, known as the "mass inflation". We briefly comment on possible ways to overcome this problem in the models of non-singular evaporating black holes.
Key words: electroweak monopole / mass of electroweak monopole / cosmological production of electroweak monopole / remnant density of electroweak monopole / seed of large scale structure.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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