How red is a quantum black hole?

Details How red is a quantum black hole? How red is a quantum black hole?

2005-05-30

arxiv.org/abs/gr-qc/0505153v1

Int.J.Mod.Phys. D14 (2005) 2233-2238

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

3 pages, essay for the Gravity Research Foundation

Scientific paper

Radiating black holes pose a number of puzzles for semiclassical and quantum gravity. These include the transplanckian problem -- the nearly infinite energies of Hawking particles created near the horizon, and the final state of evaporation. A definitive resolution of these questions likely requires robust inputs from quantum gravity. We argue that one such input is a quantum bound on curvature. We show how this leads to an upper limit on the redshift of a Hawking emitted particle, to a maximum temperature for a black hole, and to the prediction of a Planck scale remnant.

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