Hawking radiation from the quantum Lemaitre-Tolman-Bondi model

Journal Article · Fri Jun 15 00:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.124010· OSTI ID:20935317

Kiefer, Claus; Mueller-Hill, Jakob; Singh, T P; Vaz, Cenalo ^[1]

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1. Institut fuer Theoretische Physik, Universitaet zu Koeln, Zuelpicher Str. 77, 50937 Cologne (Germany)

In an earlier paper, we obtained exact solutions of the Wheeler-DeWitt equation for the Lemaitre-Tolman-Bondi model of gravitational collapse, employing a lattice regularization. In this paper, we derive Hawking radiation in nonmarginally bound models from our exact solutions. We show that a nonvanishing energy function does not spoil the (approximate) Planck spectrum near the horizon. We can also reliably compute corrections to the Bogoliubov coefficient because our solutions are exact. The corrections are obtained by going beyond the near-horizon region and are shown to introduce additional greybody factors, which modify the blackbody spectrum of radiation from the black hole.

• OSTI ID: 20935317
• Journal Information: Physical Review. D, Particles Fields, Vol. 75, Issue 12; Other Information: DOI: 10.1103/PhysRevD.75.124010; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BLACK HOLES
CORRECTIONS
COSMOLOGICAL MODELS
EQUATIONS
EXACT SOLUTIONS
GRAVITATIONAL COLLAPSE
SPECTRA