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Title: Quantum gravity and the information loss problem
Authors: Varadarajan, Madhavan
Keywords: Quantum gravity
Quantum aspects of black holes, evaporation, thermodynamics
Issue Date: Nov-2008
Publisher: IOP Publishing Ltd.
Citation: Journal of Physics: Conference Series, 2008, Vol.140, p012007
Abstract: We review the standard picture of black hole evaporation and the ensuing Information Loss Problem. Next, we describe an alternative view of the evaporation process due to Ashtekar and Bojowald (AB) which rests on the assumption of singularity resolution in quantum gravity. To endow the AB proposal with precision as well as to test it in a quantitative setting, we consider the Callen-Giddings-Harvey-Strominger (CGHS) toy model of 2-dimensional black holes. We propose a quantum framework in which to understand this model and show that the proposed framework implies that the classical spacetime manifold acquires a quantum extension, as in the AB paradigm. We show that asymptotic analysis coupled with the quantum framework suggests a unitary picture of black hole evaporation consistent with early (on the extended null infinity) time Hawking radiation.
Description: Open Access. Sixth International Conference on Gravitation and Cosmology, IUCAA, Pune,
ISSN: 1742-6588
1742-6596 (Online)
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Copyright: 2008, IOP Publishing Ltd.
Appears in Collections:Research Papers (TP)

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