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  Radiation from quantum weakly dynamical horizons in LQG

Pranzetti, D. (2012). Radiation from quantum weakly dynamical horizons in LQG. Physical Review Letters, 109: 011301. doi:10.1103/PhysRevLett.109.011301.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-EE72-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-EE73-9
Genre: Journal Article

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 Creators:
Pranzetti, Daniele1, Author              
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1Microscopic Quantum Structure & Dynamics of Spacetime, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, 67201              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: Using the recent thermodynamical study of isolated horizons by Ghosh and Perez, we provide a statistical mechanical analysis of isolated horizons near equilibrium in the grand canonical ensemble. By matching the description of the dynamical phase in terms of weakly dynamical horizons with this local statistical framework, we introduce a notion of temperature in terms of the local surface gravity. This provides further support to the recovering of the semiclassical area law just by means of thermodynamical considerations. Moreover, it allows us to study the radiation process generated by the LQG dynamics near the horizon, providing a quantum gravity description of the horizon evaporation. For large black holes, the spectrum we derive presents a discrete structure which could be potentially observable and might be preserved even after the inclusion of all the relevant transition lines.

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 Dates: 2012-04-032012
 Publication Status: Published in print
 Pages: 9 pages, 2 figures
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 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1204.0702
DOI: 10.1103/PhysRevLett.109.011301
URI: http://arxiv.org/abs/1204.0702
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Title: Physical Review Letters
Source Genre: Journal
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Publ. Info: Woodbury, N.Y., etc. : American Physical Society.
Pages: - Volume / Issue: 109 Sequence Number: 011301 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: /journals/resource/954925433406_1