Semiclassical Loop Quantum Gravity and Black Hole Thermodynamics

Symmetry Integrability and Geometry-Methods and Applications

article

Arundhati Dasgupta¹ 

[1] University of Lethbridge, 4401 University Drive

关键词: black holes;    loop quantum gravity;    coherent states;    entanglement entropy;   

DOI  :  10.3842/SIGMA.2013.013

来源: National Academy of Science of Ukraine

【 摘 要 】

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.

【 授权许可】

Unknown