General Relativity and Quantum Cosmology
[Submitted on 5 Nov 2007]
Title:Semiclassical Horizons
View PDFAbstract: The entropy of apparent horizons is derived using coherent states or semiclassical states in quantum gravity. The leading term is proportional to area for large horizons, and the correction terms differ according to the details of the graph which is used to regularise the quantum gravity phase space variables.
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