Files
Document type
ArticleVersion
Published versionPublication date
All rights reserved
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/12475
Quantum black holes: Nonperturbative corrections and no-veil scenario
Journal Title
Authors
Director/Tutor
Journal ISSN
Volume Title
Related resource
Abstract
A common belief is that further quantum corrections near the singularity of a large black hole should not substantially modify the semiclassical picture of black hole evaporation; in particular, the outgoing spectrum of radiation should be very close to the thermal spectrum predicted by Hawking. In this paper we explore a possible counterexample: in the context of dilaton gravity, we find that nonperturbative quantum corrections which are important in strong-coupling regions may completely alter the semiclassical picture, to the extent that the presumptive spacelike boundary becomes timelike, changing in this way the causal structure of the semiclassical geometry. As a result, only a small fraction of the total energy is radiated outside the fake event horizon; most of the energy comes in fact at later retarded times and there is no problem of information loss. This may constitute a general characteristic of quantum black holes, that is, quantum gravity might be such as to prevent the formation of global event horizons.
Subject (English)
Citation
Citation
RUSSO, J. G. (Jorge Guillermo). Quantum black holes: Nonperturbative corrections and no-veil scenario. Physical Review D. 1994. Vol. 49, num. 10, pags. 5266-5277. ISSN 0556-2821. [consulted: 18 of June of 2026]. Available at: https://hdl.handle.net/2445/12475