学会発表

理論物理学
教授 黒木経秀

掲載年度 2020
種類 国外
学会名 Randomness, Integrability and Representation Theory in Quantum Field Theory 2021
発表題目 Replica wormholes and defects in JT gravity from Liouville theory
発表者 黒木経秀
主催団体 Osaka City University
発表場所
発表日 2021/03/25
講演内容 We consider replica wormholes and defects in JT gravity in terms of boundary Liouville theory. We first make precise connection between the JT gravity and semiclassical Liouville theory. In particular, we clarify how nontrivial physics associated with dilaton in the former is encoded into the latter. According to this dictionary, we can reproduce the precise form of contribution from the replica wormhole to the generalized entropy by applying the replica trick directly to the Liouville theory. Here it is remarkable that even the contribution from the boundary dilaton can be also exactly retrieved. Our dictionary also enables us to identify defects in the JT gravity as the deformation of the Liouville action.