On the viability of regular black holes
Abstract The evaporation of black holes raises a number of conceptual issues, most of them related to the final stages of evaporation, where the interplay between the central singularity and Hawking radiation cannot be ignored. Regular models of black holes replace the central singularity with a non...
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Online Access: | http://link.springer.com/article/10.1007/JHEP07(2018)023 |
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doaj-d02778d05de146bea954631d6c9eafd92020-11-25T02:04:36ZengSpringerOpenJournal of High Energy Physics1029-84792018-07-012018711910.1007/JHEP07(2018)023On the viability of regular black holesRaúl Carballo-Rubio0Francesco Di Filippo1Stefano Liberati2Costantino Pacilio3Matt Visser4SISSA, International School for Advanced StudiesSISSA, International School for Advanced StudiesSISSA, International School for Advanced StudiesSISSA, International School for Advanced StudiesSchool of Mathematics and Statistics, Victoria University of WellingtonAbstract The evaporation of black holes raises a number of conceptual issues, most of them related to the final stages of evaporation, where the interplay between the central singularity and Hawking radiation cannot be ignored. Regular models of black holes replace the central singularity with a nonsingular spacetime region, in which an effective classical geometric description is available. It has been argued that these models provide an effective, but complete, description of the evaporation of black holes at all times up to their eventual disappearance. However, here we point out that known models fail to be self-consistent: the regular core is exponentially unstable against perturbations with a finite timescale, while the evaporation time is infinite, therefore making the instability impossible to prevent. We also discuss how to overcome these difficulties, highlighting that this can be done only at the price of accepting that these models cannot be fully predictive regarding the final stages of evaporation.http://link.springer.com/article/10.1007/JHEP07(2018)023Black HolesModels of Quantum GravitySpacetime Singularities |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Raúl Carballo-Rubio Francesco Di Filippo Stefano Liberati Costantino Pacilio Matt Visser |
spellingShingle |
Raúl Carballo-Rubio Francesco Di Filippo Stefano Liberati Costantino Pacilio Matt Visser On the viability of regular black holes Journal of High Energy Physics Black Holes Models of Quantum Gravity Spacetime Singularities |
author_facet |
Raúl Carballo-Rubio Francesco Di Filippo Stefano Liberati Costantino Pacilio Matt Visser |
author_sort |
Raúl Carballo-Rubio |
title |
On the viability of regular black holes |
title_short |
On the viability of regular black holes |
title_full |
On the viability of regular black holes |
title_fullStr |
On the viability of regular black holes |
title_full_unstemmed |
On the viability of regular black holes |
title_sort |
on the viability of regular black holes |
publisher |
SpringerOpen |
series |
Journal of High Energy Physics |
issn |
1029-8479 |
publishDate |
2018-07-01 |
description |
Abstract The evaporation of black holes raises a number of conceptual issues, most of them related to the final stages of evaporation, where the interplay between the central singularity and Hawking radiation cannot be ignored. Regular models of black holes replace the central singularity with a nonsingular spacetime region, in which an effective classical geometric description is available. It has been argued that these models provide an effective, but complete, description of the evaporation of black holes at all times up to their eventual disappearance. However, here we point out that known models fail to be self-consistent: the regular core is exponentially unstable against perturbations with a finite timescale, while the evaporation time is infinite, therefore making the instability impossible to prevent. We also discuss how to overcome these difficulties, highlighting that this can be done only at the price of accepting that these models cannot be fully predictive regarding the final stages of evaporation. |
topic |
Black Holes Models of Quantum Gravity Spacetime Singularities |
url |
http://link.springer.com/article/10.1007/JHEP07(2018)023 |
work_keys_str_mv |
AT raulcarballorubio ontheviabilityofregularblackholes AT francescodifilippo ontheviabilityofregularblackholes AT stefanoliberati ontheviabilityofregularblackholes AT costantinopacilio ontheviabilityofregularblackholes AT mattvisser ontheviabilityofregularblackholes |
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