Small Black/White Hole Stability and Dark Matter

Small Black/White Hole Stability and Dark Matter

We show that the expected lifetime of white holes formed as remnants of evaporated black holes is consistent with their production at reheating. We give a simple quantum description of these objects and argue that a quantum superposition of black and white holes with large interiors is stable, becau...

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Bibliographic Details
Main Authors: Carlo Rovelli, Francesca Vidotto
Format: Article
Language:English
Published: MDPI AG 2018-11-01
Series:Universe
Subjects:
dark matter
remnants
white holes
loop quantum gravity
Online Access:https://www.mdpi.com/2218-1997/4/11/127
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spelling doaj-95804f45623a4ae9b8fcc855b3737d3f2020-11-24T23:03:21ZengMDPI AGUniverse2218-19972018-11-0141112710.3390/universe4110127universe4110127Small Black/White Hole Stability and Dark MatterCarlo Rovelli0Francesca Vidotto1Centre di Physique Théorique, Aix-Marseille Université, Université de Toulon, CNRS, F-13288 Marseille, FranceDepartamento de Física Teórica, University of the Basque Country UPV/EHU, E-48940 Leioa, SpainWe show that the expected lifetime of white holes formed as remnants of evaporated black holes is consistent with their production at reheating. We give a simple quantum description of these objects and argue that a quantum superposition of black and white holes with large interiors is stable, because it is protected by the existence of a minimal eigenvalue of the area, predicted by Loop Quantum Gravity. These two results support the hypothesis that a component of dark matter could be formed by small black hole remnants.https://www.mdpi.com/2218-1997/4/11/127dark matterremnantswhite holesloop quantum gravity
collection DOAJ
language English
format Article
sources DOAJ
author Carlo Rovelli
Francesca Vidotto
spellingShingle Carlo Rovelli
Francesca Vidotto
Small Black/White Hole Stability and Dark Matter
Universe
dark matter
remnants
white holes
loop quantum gravity
author_facet Carlo Rovelli
Francesca Vidotto
author_sort Carlo Rovelli
title Small Black/White Hole Stability and Dark Matter
title_short Small Black/White Hole Stability and Dark Matter
title_full Small Black/White Hole Stability and Dark Matter
title_fullStr Small Black/White Hole Stability and Dark Matter
title_full_unstemmed Small Black/White Hole Stability and Dark Matter
title_sort small black/white hole stability and dark matter
publisher MDPI AG
series Universe
issn 2218-1997
publishDate 2018-11-01
description We show that the expected lifetime of white holes formed as remnants of evaporated black holes is consistent with their production at reheating. We give a simple quantum description of these objects and argue that a quantum superposition of black and white holes with large interiors is stable, because it is protected by the existence of a minimal eigenvalue of the area, predicted by Loop Quantum Gravity. These two results support the hypothesis that a component of dark matter could be formed by small black hole remnants.
topic dark matter
remnants
white holes
loop quantum gravity
url https://www.mdpi.com/2218-1997/4/11/127
work_keys_str_mv AT carlorovelli smallblackwhiteholestabilityanddarkmatter
AT francescavidotto smallblackwhiteholestabilityanddarkmatter
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