Black hole entropy and the semiclassical approximation

Details Black hole entropy and the semiclassical approximation Black hole entropy and the semiclassical approximation

1994-04-21

arxiv.org/abs/hep-th/9404135v2

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, 1 figure (included), plain tex. (Section on quantum gravity is rewritten to explain basic ideas more clearly.)

Scientific paper

We compute the entropy of the Hawking radiation for an evaporating black hole, in 1+1 dimensions and in 3+1 dimensions. We investigate the validity of the semiclassical approximation for the evaporation process. It appears that there might be a large entropy of entanglement between the classical degrees of freedom describing the black hole and the radiation fields when the theory of quantum gravity plus matter is considered.

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