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Article

Black Hole Evaporation: A Perspective from Loop Quantum Gravity

Institute for Gravitation and the Cosmos, Penn State University, University Park, PA 16801, USA
Universe 2020, 6(2), 21; https://doi.org/10.3390/universe6020021
Received: 9 December 2019 / Revised: 20 January 2020 / Accepted: 20 January 2020 / Published: 24 January 2020
(This article belongs to the Special Issue Probing New Physics with Black Holes)
A personal perspective on the black hole evaporation process is presented using, as guidelines, inputs from: (i) loop quantum gravity, (ii) simplified models where concrete results have been obtained, and, (iii) semi-classical quantum general relativity. On the one hand, the final picture is conservative in that there are concrete results that support each stage of the argument, and there are no large departures from general relativity or semi-classical gravity in tame regions outside macroscopic black holes. On the other hand, it argues against certain views that are commonly held in many quarters, such as persistence of a piece of singularity that constitutes a part of the final boundary of space–time; presence of an event horizon serving as an absolute barrier between the interior and the exterior, and the (often implicit) requirement that purification must be completed by the time the ‘last rays’ representing the extension of this event horizon reach I + . View Full-Text
Keywords: black holes; information loss; loop quantum gravity black holes; information loss; loop quantum gravity
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MDPI and ACS Style

Ashtekar, A. Black Hole Evaporation: A Perspective from Loop Quantum Gravity. Universe 2020, 6, 21. https://doi.org/10.3390/universe6020021

AMA Style

Ashtekar A. Black Hole Evaporation: A Perspective from Loop Quantum Gravity. Universe. 2020; 6(2):21. https://doi.org/10.3390/universe6020021

Chicago/Turabian Style

Ashtekar, Abhay. 2020. "Black Hole Evaporation: A Perspective from Loop Quantum Gravity" Universe 6, no. 2: 21. https://doi.org/10.3390/universe6020021

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