Warped information and entanglement islands in AdS/WCFT

Cáceres, Elena; Kundu, Arnab; Patra, Ayan K.; Shashi, Sanjit

doi:10.1007/jhep07(2021)004

Cited by 42 publications

(14 citation statements)

References 66 publications

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“…We conclude by noting some of the latest works on the information paradox, as a point of entry into the recent developments [45][46][47][48][49][50][51][52].…”

Section: Jhep08(2021)119mentioning

confidence: 99%

Dirichlet baths and the not-so-fine-grained Page curve

Ghosh

Krishnan

2021

J. High Energ. Phys.

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We present a doubly holographic prescription for computing entanglement entropy on a gravitating brane. It involves a Ryu-Takayanagi surface with a Dirichlet anchoring condition. In braneworld cosmology, a related approach was used previously in arXiv:2007.06551. There, the prescription naturally computed a co-moving entanglement entropy, and was argued to resolve the information paradox for a black hole living in the cosmology. In this paper, we show that the Dirichlet prescription leads to reasonable results, when applied to a recently studied wedge holography set up with a gravitating bath. The nature of the information paradox and its resolution in our Dirichlet problem have a natural understanding in terms of the strength of gravity on the two branes and at the anchoring location. By sliding the anchor to the defect, we demonstrate that the limit where gravity decouples from the anchor is continuous — in other words, as far as island physics is considered, weak gravity on the anchor is identical to no gravity. The weak and (moderately) strong gravity regions on the brane are separated by a “Dirichlet wall”. We find an intricate interplay between various extremal surfaces, with an island coming to the rescue whenever there is an information paradox. This is despite the presence of massless gravitons in the spectrum. The overall physics is consistent with the slogan that gravity becomes “more holographic”, as it gets stronger. Our observations strengthen the case that the conventional Page curve is indeed of significance, when discussing the information paradox in flat space. We work in high enough dimensions so that the graviton is non-trivial, and our results are in line with the previous discussions on gravitating baths in arXiv:2005.02993 and arXiv:2007.06551.

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“…We conclude by noting some of the latest works on the information paradox, as a point of entry into the recent developments [45][46][47][48][49][50][51][52].…”

Section: Jhep08(2021)119mentioning

confidence: 99%

Dirichlet baths and the not-so-fine-grained Page curve

Ghosh

Krishnan

2021

J. High Energ. Phys.

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“…Differences in the literature and pending questions aside, a lot can be learned by either slightly deviating from or further probing the typical "brane and nongravitat-ing half-space BCFT bath" construction, as done by [35][36][37][38][39][40][41].…”

Section: S(r) = Min Extmentioning

confidence: 99%

Page Curves and Bath Deformations

Caceres,

Kundu,

Patra

et al. 2021

Preprint

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We study the black hole information problem within a semiclassically gravitating AdS d black hole coupled to and in equilibrium with a d-dimensional thermal conformal bath. We deform the bath state by a relevant scalar deformation, triggering a holographic RG flow whose "trans-IR" region deforms from a Schwarzschild geometry to a Kasner universe. The setup manifests two independent scales which control both the extent of coarse-graining and the entanglement dynamics when counting Hawking degrees of freedom in the bath. In tuning either, we find nontrivial changes to the Page time and Page curve. We consequently view the Page curve as a probe of the holographic RG flow, with a higher Page time manifesting as a result of increased coarse-graining of the bath degrees of freedom.

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“…This nice feature of double holography naturally leads to a geometric perspective of the black hole formation and evaporation. Since this exciting development, a variety of very interesting models have explored different techniques to geometrize the island formulation [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. In this article we focus on another distinct recent geometric construction proposed in [20].…”

Section: Introductionmentioning

confidence: 99%

Page curve for entanglement negativity through geometric evaporation

et al. 2022

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We compute the entanglement negativity for various pure and mixed state configurations in a bath coupled to an evaporating two dimensional non-extremal Jackiw-Teitelboim (JT) black hole obtained through the partial dimensional reduction of a three dimensional BTZ black hole. Our results exactly reproduce the analogues of the Page curve for the entanglement negativity which were recently determined through diagrammatic technique developed in the context of random matrix theory.

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Warped information and entanglement islands in AdS/WCFT

Cited by 42 publications

References 66 publications

Dirichlet baths and the not-so-fine-grained Page curve

Dirichlet baths and the not-so-fine-grained Page curve

Page Curves and Bath Deformations

Page curve for entanglement negativity through geometric evaporation

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