Entropy of the information retrieved from black holes. (31st May 2016)

• Record Type: Journal Article
• Authors: Mersini-Houghton, Laura
• Is Part Of: Classical and quantum gravity. Volume 33:Number 13(2016:Jul.)
• Publication Date: 2016-05-31
• Subjects: quantum -- measurement -- QZE; 98.80.Qc -- 11.25.Wx; Quantum gravity -- Periodicals; Gravitation -- Periodicals; Relativity (Physics) -- Periodicals; Space and time -- Periodicals; Periodicals; 521.1
• DOI: 10.1088/0264-9381/33/13/137001
• Languages: English
• ISSNs: 0264-9381

Abstract

Abstract: The retrieval of black hole information was recently presented in two interesting proposals in the 'Hawking Radiation' conference: a revised version by Hooft of a proposal he initially suggested 20 years ago and, a new proposal by Hawking. Both proposals address the problem of black hole information loss at the classical level and derive an expression for the scattering matrix. The former uses gravitation back reaction of incoming particles that imprints its information on the outgoing modes. The latter uses supertranslation symmetry of horizons to relate a phase delay of the outgoing wave packet compared to their incoming wave partners. The difficulty in both proposals is that the entropy obtained from them appears to be infinite. By including quantum effects into the Hawking and Hooft's proposals, I show that a subtlety arising from the inescapable measurement process, the quantum Zeno effect, not only tames divergences but it actually recovers the correct 1/4 of the area Bekenstein–Hawking entropy law of black holes.