Marcin Domagala and Jerzy Lewandowski 2004 Class. Quantum Grav. 21 5233 doi:10.1088/0264-9381/21/22/014
Black-hole entropy from quantum geometry
Marcin Domagala1 and Jerzy Lewandowski1,2,3
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a 69, 00-681 Warszawa, Poland
Quantum geometry (the modern loop quantum gravity involving graphs and spin-networks instead of the loops) provides microscopic degrees of freedom that account for black-hole entropy. However, the procedure for state counting used in the literature contains an error and the number of the relevant horizon states is underestimated. In our paper a correct method of counting is presented. Our results lead to a revision of the literature of the subject. It turns out that the contribution of spins greater than 1/2 to the entropy is not negligible. Hence, the value of the Barbero–Immirzi parameter involved in the spectra of all the geometric and physical operators in this theory is different than previously derived. Also, the conjectured relation between quantum geometry and the black-hole quasi-normal modes should be understood again.
- PACS
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04.70.Dy Quantum aspects of black holes, evaporation, thermodynamics
- MSC
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- Dates
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Issue 22 (21 November 2004)
Received 16 September 2004
Published 29 October 2004
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Black-hole entropy from quantum geometry
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