Global symmetry, Euclidean gravity, and the black hole information problem
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Publication:2032567
DOI10.1007/JHEP04(2021)175zbMATH Open1462.83016arXiv2010.10539OpenAlexW3093891181WikidataQ114233595 ScholiaQ114233595MaRDI QIDQ2032567
Author name not available (Why is that?)
Publication date: 11 June 2021
Published in: (Search for Journal in Brave)
Abstract: In this paper we argue for a close connection between the non-existence of global symmetries in quantum gravity and a unitary resolution of the black hole information problem. In particular we show how the essential ingredients of recent calculations of the Page curve of an evaporating black hole can be used to generalize a recent argument against global symmetries beyond the AdS/CFT correspondence to more realistic theories of quantum gravity. We also give several low-dimensional examples of quantum gravity theories which do not have a unitary resolution of the black hole information problem in the usual sense, and which therefore can and do have global symmetries. Motivated by this discussion, we conjecture that in a certain sense Euclidean quantum gravity is equivalent to holography.
Full work available at URL: https://arxiv.org/abs/2010.10539
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