On the dynamics in the AdS/BCFT correspondence

Suzuki, Yu-ki; Terashima, Shiro

doi:10.1007/jhep09(2022)103

Cited by 12 publications

(6 citation statements)

References 85 publications

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“…Quantum states in the boundary CFT will be defined on slices that avoid the branes, so despite the boundary in Euclidean signature, the Lorentzian theory is not a BCFT -the brane defines an excited state in an ordinary CFT. Bulk solutions with an EOW brane have been studied extensively [18,[49][50][51][52][53][54][55][56][57][58][59][60][61][62]. We will consider the black hole solution found in [18] (see also [54] for a discussion of the tensionless case).…”

Section: B-state Black Holesmentioning

confidence: 99%

Coarse graining pure states in AdS/CFT

Chandra,

Hartman

2023

J. High Energ. Phys.

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We construct new Euclidean wormhole solutions in AdSd+1 and discuss their role in UV-complete theories, without ensemble averaging. The geometries are interpreted as overlaps of GHZ-like entangled states, which arise naturally from coarse graining the density matrix of a pure state in the dual CFT. In several examples, including thin-shell collapsing black holes and pure black holes with an end-of-the-world brane behind the horizon, the coarse-graining map is found explicitly in CFT terms, and used to define a coarse-grained entropy that is equal to one quarter the area of a time-symmetric apparent horizon. Wormholes are used to derive the coarse-graining map and to study statistical properties of the quantum state. This reproduces aspects of the West Coast model of 2D gravity and the large-c ensemble of 3D gravity, including a Page curve, in a higher-dimensional context with generic matter fields.

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Section: B-state Black Holesmentioning

confidence: 99%

Coarse graining pure states in AdS/CFT

Chandra,

Hartman

2023

J. High Energ. Phys.

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“…The island formula has been extensively studied in the models where a Jackiw-Teitelboim (JT) gravity coupled to a CFT 2 bath in flat background [5][6][7][8]. Combined with the braneworld holography [94][95][96], the entanglement islands also emerge in an effective 2d description of AdS/BCFT [12,[97][98][99][100]. Also, the PEE has been explored in this context; for example, the authors of [80,83] have studied the entanglement contour for the Hawking radiation based on the straightforward application of the ALC proposal for PEE in island phase.…”

Section: Minimal Requirementmentioning

confidence: 99%

Ownerless island and partial entanglement entropy in island phases

Basu,

Lin,

et al. 2023

SciPost Phys.

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In the context of partial entanglement entropy (PEE), we study the entanglement structure of the island phases realized in several 2-dimensional holographic set-ups. From a pure quantum information perspective, the entanglement islands emerge from the self-encoding property of the system, which gives us new insights on the construction of the PEE and the physical interpretation of two-point functions of twist operators in island phases. With the contributions from the entanglement islands properly taken into account, we give a generalized prescription to construct PEE and balanced partial entanglement entropy (BPE). Here the ownerless island region, which lies inside the island \text{Is}(AB)Is(AB) of A\cup BA∪B but outside \text{Is}(A)\cup \text{Is}(B)Is(A)∪Is(B), plays a crucial role. Remarkably, we find that under different assignments for the ownerless island, we get different BPEs, which exactly correspond to different saddles of the entanglement wedge cross-section (EWCS) in the entanglement wedge of A\cup BA∪B. The assignments can be settled by choosing the one that minimizes the BPE. Furthermore, under this assignment we study the PEE and give a geometric picture for the PEE in holography, which is consistent with the geometric picture in the no-island phases.

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“…There are many other applications of the idea of AdS/BCFT, ranging from quantum many-body aspects of chaotic BCFTs [55][56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73] and boundary renormalization group flows [74][75][76][77], to calculating quantum information measures [78][79][80][81][82][83][84][85][86] and building cosmological models [87][88][89][90][91]. The basic duality relations and their consistency of AdS/BCFT have also been analyzed in [92][93][94][95][96] and string theory realizations have also been studied in [97][98][99][100][101][102]…”

Section: Jhep03(2023)105 1 Introductionmentioning

confidence: 99%

AdS/BCFT with brane-localized scalar field

Kanda

Sato

Suzuki

et al. 2023

J. High Energ. Phys.

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In this paper, we study the dynamics of end-of-the-world (EOW) branes in AdS with scalar fields localized on the branes as a new class of gravity duals of CFTs on manifolds with boundaries. This allows us to construct explicit solutions dual to boundary RG flows. We also obtain a variety of annulus-like or cone-like shaped EOW branes, which are not possible without the scalar field. We also present a gravity dual of a CFT on a strip with two different boundary conditions due to the scalar potential, where we find the confinement/deconfinement-like transition as a function of temperature and the scalar potential. Finally, we point out that this phase transition is closely related to the measurement-induced phase transition, via a Wick rotation.

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On the dynamics in the AdS/BCFT correspondence

Cited by 12 publications

References 85 publications

Coarse graining pure states in AdS/CFT

Coarse graining pure states in AdS/CFT

Ownerless island and partial entanglement entropy in island phases

AdS/BCFT with brane-localized scalar field

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