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Holographic Local Operator Quenches in BCFTs

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arxiv 2203.03851 v3 pith:KVEXLGRT submitted 2022-03-08 hep-th cond-mat.stat-mechgr-qc

Taishi Kawamoto , Takato Mori , Yu-ki Suzuki , Tadashi Takayanagi , Tomonori Ugajin This is my paper · ORCID
classification hep-thcond-mat.stat-mechgr-qc
keywords branedualgravitylocaloperatoravoidsbackreactionbcft
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We present a gravity dual of local operator quench in a two-dimensional CFT with conformal boundaries. This is given by a massive excitation in a three-dimensional AdS space with the end of the world brane (EOW brane). Due to the gravitational backreaction, the EOW brane gets deformed in a nontrivial way. We show that the energy-momentum tensor and entanglement entropy computed from the gravity dual and from the BCFT in the large $c$ limit match perfectly. Interestingly, this comparison avoids the folding of the EOW brane in an elegant way.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Towards a Holographic dual of Carrollian BCFT

    hep-th 2026-08 conditional novelty 6.0 of 10

    An end-of-the-world brane in 3d flat spacetime is shown to reduce spacetime symmetries to the boundary Carrollian conformal algebra, suggesting a flat-space analogue of AdS3/BCFT2 holography.

  2. Holographic Correlators of Boundary/Crosscap CFTs in Two Dimensions

    hep-th 2025-01 accept novelty 6.0 of 10

    Explicit bulk derivations yield two- and three-point stress tensor correlators in AdS3/BCFT2 and scalar and stress tensor correlators for XCFT2 on RP2, with tension independence and finite-cutoff deformations.

  3. Projections and teleportation of operator quenches in CFT

    hep-th 2024-12 conditional novelty 6.0 of 10

    In a 2D CFT, projecting an operator quench onto a Cardy state produces Renyi entropies with a surprising even/odd n dependence, indicating imperfect teleportation and obstructing the n to 1 von Neumann limit.

  4. The entropy of radiation for local quenches in higher dimensions

    hep-th 2025-01 conditional novelty 5.0 of 10

    For local quenches in d>2 CFTs, the excess entanglement entropy of radiation grows as ξ^{d/2} at early and late times, obeys an all-time relative-entropy bound, and the holographic model produces a Page-like curve.

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