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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Main Authors: Raúl Carballo-Rubio, Francesco Di Filippo, Stefano Liberati, Costantino Pacilio, Matt Visser
Format: Article
Language:English
Published: SpringerOpen 2018-07-01
Series:Journal of High Energy Physics
Subjects:
Online Access:http://link.springer.com/article/10.1007/JHEP07(2018)023
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spelling 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
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