Semiclassical Loop Quantum Gravity and Black Hole Thermodynamics

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 SU(2) intertwiners. We further show that Hawking ra...

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Bibliographic Details
Published inSymmetry, integrability and geometry, methods and applications Vol. 9; p. 013
Main Author Dasgupta, Arundhati
Format Journal Article
LanguageEnglish
Published Kiev National Academy of Sciences of Ukraine 01.01.2013
National Academy of Science of Ukraine
Subjects
Black holes
coherent states
entanglement entropy
loop quantum gravity
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Summary: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 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. [ProQuest: [...] denotes formulae omitted.]
ISSN:1815-0659
1815-0659
DOI:10.3842/SIGMA.2013.013