Black Hole Tunneling Entropy and the Spectrum of Gravity

Details Black Hole Tunneling Entropy and the Spectrum of Gravity Black Hole Tunneling Entropy and the Spectrum of Gravity

1992-12-15

arxiv.org/abs/gr-qc/9212010v1

Class.Quant.Grav.10:2479-2494,1993

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

26 pages + 3 figures, phyzzx macropackage, figures available from Authors

Scientific paper

10.1088/0264-9381/10/12/007

The tunneling approach for entropy generation in quantum gravity is applied to black holes. The area entropy is recovered and shown to count only a tiny fraction of the black hole degeneracy. The latter stems from the extension of the wave function outside the barrier. In fact the semi-classical analysis leads to infinite degeneracy. Evaporating black holes leave then infinitely degenerate "planckons" remnants which can neither decay into, nor be formed from, ordinary matter in a finite time. Quantum gravity opens up at the Planck scale into an infinite Hilbert space which is expected to provide the ultraviolet cutoff required to render the theory finite in the sector of large scale physics.

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