Black hole evaporation rates without spacetime

Details Black hole evaporation rates without spacetime Black hole evaporation rates without spacetime

2011-02-11

arxiv.org/abs/1102.2326v2

Phys.Rev.Lett.107:071302,2011

Physics

Quantum Physics

8 pages, including supplementary material

Scientific paper

10.1103/PhysRevLett.107.071302

Verlinde recently suggested that gravity, inertia, and even spacetime may be emergent properties of an underlying thermodynamic theory. This vision was motivated in part by Jacobson's 1995 surprise result that the Einstein equations of gravity follow from the thermodynamic properties of event horizons. Taking a first tentative step in such a program, we derive the evaporation rate (or radiation spectrum) from black hole event horizons in a spacetime-free manner. Our result relies on a Hilbert space description of black hole evaporation, symmetries therein which follow from the inherent high dimensionality of black holes, global conservation of the no-hair quantities, and the existence of Penrose processes. Our analysis is not wedded to standard general relativity and so should apply to extended gravity theories where we find that the black hole area must be replaced by some other property in any generalized area theorem.

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