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Quantum geometry and microscopic black hole entropy

Autor Corichi, Alejandro; Díaz-Polo, Jacobo ; Fernández Borja, Enrique
Palabras clave [PACS] Loop quantum gravity, quantum geometry, spin foams
[PACS] Quantum aspects of black holes, evaporation, thermodynamics
Fecha de publicación 7-ene-2007
EditorInstitute of Physics Publishing
Citación Classical and Quantum Gravity 24: 243-251 (2007)
ResumenQuantum black holes within the loop quantum gravity (LQG) framework are considered. The number of microscopic states that is consistent with a black hole of a given horizon area A(0) are counted and the statistical entropy, as a function of the area, is obtained for A(0) up to 550l(P1)^2. The results are consistent with an asymptotic linear relation and a logarithmic correction with a coefficient equal to -1/2. The Barbero-Immirzi parameter that yields the asymptotic linear relation compatible with the Bekenstein-Hawking entropy is shown to coincide with a value close to γ = 0.274, which has been previously obtained analytically. However, a new and oscillatory functional form for the entropy is found for small, Planck size, black holes that calls for a physical interpretation.
Descripción 9 pages, 6 figures.-- PACS nrs.: 04.60.Pp, 04.70.Dy.-- ISI Article Identifier: 000242448900013.-- Published online on Nov 28, 2006.
ArXiv pre-print available at: http://arxiv.org/abs/gr-qc/0605014
Versión del editorhttp://dx.doi.org/10.1088/0264-9381/24/1/013
URI http://hdl.handle.net/10261/9067
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