A violation of global symmetries from replica wormholes and the fate of black hole remnants
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Publication:5164313
DOI10.1088/1361-6382/AC2134zbMATH Open1479.83055arXiv2011.09444OpenAlexW3098868620MaRDI QIDQ5164313
Author name not available (Why is that?)
Publication date: 11 November 2021
Published in: (Search for Journal in Brave)
Abstract: We show that the presence of replica wormholes in the Euclidean path integral of gravity leads to a non-perturbative violation of charge conservation for any global symmetry present in the low-energy description of quantum gravity. Explicitly, we compute the scattering probability between different charged states in several two-dimensional models of quantum gravity and find a non-vanishing answer. This suggests that the set of all charged states is typically over-complete, which has drastic consequences for the fate of black hole remnants that could carry a global symmetry charge. In the holographic context, we argue that the presence of such a symmetry in the effective description of the bulk should appear on the boundary as an emergent global symmetry after ensemble averaging.
Full work available at URL: https://arxiv.org/abs/2011.09444
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