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Black hole radiation spectrum in loop quantum gravity: isolated horizon framework

Jacobo Díaz-Polo1 and Enrique Fernández-Borja2

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Recent detailed analysis within the loop quantum gravity calculation of black hole entropy shows a stair-like structure in the behavior of entropy as a function of horizon area. The non-trivial distribution of the degeneracy of the black hole horizon area eigenstates is at the origin of this behavior. This degeneracy distribution is analyzed and a phenomenological model is put forward to study the implications of this distribution in the black hole radiation spectrum. Some qualitative quantum effects are obtained within the isolated horizon framework. This result provides us with a possible observational test of this model for quantum black holes.


PACS

04.70.Dy Quantum aspects of black holes, evaporation, thermodynamics

04.60.Pp Loop quantum gravity, quantum geometry, spin foams

04.60.Ds Canonical quantization

MSC

83C57 Black holes

62Exx Distribution theory (See also 60Exx)

Subjects

Gravitation and cosmology

Dates

Issue 10 (21 May 2008)

Received 18 January 2008, in final form 18 February 2008

Published 1 May 2008



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