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High Energy Physics - Theory

arXiv:2111.11688 (hep-th)
[Submitted on 23 Nov 2021 (v1), last revised 16 May 2022 (this version, v2)]

Title:Entanglement between two evaporating black holes

Authors:Akihiro Miyata, Tomonori Ugajin
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Abstract:We study a thermo-field double type entangle state on two disjoint gravitating universes, say A and B, with an eternal black hole on each. As was shown previously, its entanglement entropy of the universe A is computed by the generalized entropy on a new spacetime constructed by suitably gluing the black holes on A and B. We study such spacetime gluings when universes are asymptotically flat and AdS cases, especially when the masses of these black holes are different. We also clarify the rule to construct such a glued spacetime in more general settings from the gravitational path integral view point.
Comments: 33 pages, 11 figures; v2: typos corrected, references added
Subjects: High Energy Physics - Theory (hep-th); General Relativity and Quantum Cosmology (gr-qc)
Report number: UT-Komaba/21-5
Cite as: arXiv:2111.11688 [hep-th]
  (or arXiv:2111.11688v2 [hep-th] for this version)
  https://doi.org/10.48550/arXiv.2111.11688
Related DOI: https://doi.org/10.1007/JHEP09%282022%29009

Submission history

From: Akihiro Miyata [view email]
[v1] Tue, 23 Nov 2021 07:16:36 UTC (637 KB)
[v2] Mon, 16 May 2022 04:48:09 UTC (636 KB)
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