The path integral of 3D gravity near extremality; \textit{or}, JT gravity with defects as a matrix integral
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Publication:2024271
DOI10.1007/JHEP01(2021)118zbMATH Open1459.83036arXiv2006.11317OpenAlexW3125722678MaRDI QIDQ2024271
Author name not available (Why is that?)
Publication date: 3 May 2021
Published in: (Search for Journal in Brave)
Abstract: We propose that a class of new topologies, for which there is no classical solution, should be included in the path integral of three-dimensional pure gravity, and that their inclusion solves pathological negativities in the spectrum, replacing them with a nonperturbative shift of the BTZ extremality bound. We argue that a two-dimensional calculation using a dimensionally reduced theory captures the leading effects in the near extremal limit. To make this argument, we study a closely related two-dimensional theory of Jackiw-Teitelboim gravity with dynamical defects. We show that this theory is equivalent to a matrix integral.
Full work available at URL: https://arxiv.org/abs/2006.11317
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