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Semiclassical Loop Quantum Gravity and Black Hole Thermodynamics
Symmetry, integrability and geometry: methods and applications, Tome 9 (2013) Cet article a éte moissonné depuis la source Math-Net.Ru

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In this article we explore the origin of black hole thermodynamics using semiclassical states in loop quantum gravity. We re-examine the case of entropy using a density matrix for a coherent state and describe correlations across the horizon due to ${\rm SU}(2)$ intertwiners. We further show that Hawking radiation is a consequence of a non-Hermitian term in the evolution operator, which is necessary for entropy production or depletion at the horizon. This non-unitary evolution is also rooted in formulations of irreversible physics.
Keywords: black holes; loop quantum gravity; coherent states; entanglement entropy. 
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     author = {Arundhati Dasgupta},
     title = {Semiclassical {Loop} {Quantum} {Gravity} and {Black} {Hole} {Thermodynamics}},
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     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2013_9_a12/}
}
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Arundhati Dasgupta. Semiclassical Loop Quantum Gravity and Black Hole Thermodynamics. Symmetry, integrability and geometry: methods and applications, Tome 9 (2013). http://geodesic.mathdoc.fr/item/SIGMA_2013_9_a12/

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