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http://hdl.handle.net/2445/12475
Title: | Quantum black holes: Nonperturbative corrections and no-veil scenario |
Author: | Russo, J. G. (Jorge Guillermo) |
Keywords: | Relativitat general (Física) Gravitació General relativity (Physics) Gravitation |
Issue Date: | 1994 |
Publisher: | The American Physical Society |
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. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.49.5266 |
It is part of: | Physical Review D, 1994, vol. 49, núm. 10, p. 5266-5277 |
URI: | http://hdl.handle.net/2445/12475 |
Related resource: | http://dx.doi.org/10.1103/PhysRevD.49.5266 |
ISSN: | 0556-2821 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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512122.pdf | 2.03 MB | Adobe PDF | View/Open |
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