Looking for (and not finding) a bulk brane

Reeves, Wyatt; Rozali, Moshe; Simidzija, Petar; Sully, James; Waddell, Chris; Wakeham, David

doi:10.1007/jhep12(2021)002

Cited by 33 publications

(28 citation statements)

References 56 publications

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“…In this paper we used a thin-brane approximation in order to extend the interface into the holographic bulk, and it would clearly be interesting to understand the consequences of relaxing this assumption in future work. Indeed, explicit top down models of interface CFTs often underline the necessity of relaxing the thin-brane setup [72][73][74][75][76], while models closer to the setup considered here might be possible [77,78], but fine-tuned [79]. The point of view most directly related to black hole evaporation is the double holographic one, where we actually think of the interface degrees of freedom as its own boundary theory, I d−1 , with a d−dimensional gravitational bulk confined to the world-volume of the brane separating the holographic duals of both boundary CFT d .…”

Section: Discussionmentioning

confidence: 94%

“…It would be interesting to carry out this expansion in future work, and to potentially use it to constrain the properties that distinguish holographic ICFTs from their generic relatives. Recently, [79] derived constraints for the applicability of a thin-brane description in holographic ICFT, along the lines of the bullk-point approach initiated in [81,82], and it would be interesting to see what can be learned from comparing to the correlation functions we have derived here.…”

Section: Discussionmentioning

confidence: 99%

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Sailing past the End of the World and discovering the Island

Anous¹,

Meineri²,

Pelliconi³

et al. 2022

Preprint

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Large black holes in anti-de Sitter space have positive specific heat and do not evaporate. In order to mimic the behavior of evaporating black holes, one may couple the system to an external bath. In this paper we explore a rich family of such models, namely ones obtained by coupling two holographic CFTs along a shared interface (ICFTs). We focus on the limit where the bulk solution is characterized by a thin brane separating the two individual duals. These systems may be interpreted in a double holographic way, where one integrates out the bath and ends up with a lower-dimensional gravitational braneworld dual to the interface degrees of freedom. Our setup has the advantage that all observables can be defined and calculated by only relying on standard rules of AdS/CFT. We exploit this to establish a number of general results, relying on a detailed analysis of the geodesics in the bulk. Firstly, we prove that the entropy of Hawking radiation in the braneworld is obtained by extremizing the generalized entropy, and moreover that at late times a so-called 'island saddle' gives the dominant contribution. We also derive Takayanagi's prescription for calculating entanglement entropies in BCFTs as a limit of our ICFT results.

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Sailing past the End of the World and discovering the Island

Anous¹,

Meineri²,

Pelliconi³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Therefore, we have to consider the brane with the large tension if we would like to use the braneworld holography [17]. We also have some constraints from the existence of the bulk causality [84,97]. This type of assumption appears as some constraints on the BCFT data on the BCFT side (for example, see [84,98]).…”

Section: • Impossible Brane Configurationmentioning

confidence: 99%

“…We also have some constraints from the existence of the bulk causality [84,97]. This type of assumption appears as some constraints on the BCFT data on the BCFT side (for example, see [84,98]). It would be interesting to make use of these assumptions to solve the bootstrap equation.…”

Section: • Impossible Brane Configurationmentioning

confidence: 99%

Analytic Bootstrap in 2D Boundary Conformal Field Theory: Towards Braneworld Holography

Kusuki

2021

Preprint

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Recently, boundary conformal field theories (BCFTs) have attracted much attention in the context of quantum gravity. This is because a BCFT can be dual to gravity coupled to a heat bath CFT, known as the island model. On this background, it would be interesting to explore the duality between the boundary and the braneworld. However, this seems to be a challenging problem. The reason is because although there has been much study of rational BCFTs, there has been comparatively little study of irrational BCFTs, and irrational BCFTs are expected to be the boundary duals of the braneworlds. For this reason, we explore properties of boundary ingredients: the boundary primary spectrum, the boundaryboundary-boundary OPE coefficients and the bulk-boundary OPE coefficients. For this purpose, the conformal bootstrap is extremely useful. This is the first step in providing an understanding of BCFTs in the context of braneworld holography by using the conformal bootstrap. The techniques developed in this paper may be useful for further investigation of irrational BCFTs.

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“…Instead of being cut off by an ETW brane, the geometry ends smoothly by cycles in the internal space of the AdS 4 solution collapsing. Recent studies of these solutions include [11,[21][22][23][24][25][26][27][28].…”

mentioning

confidence: 99%

Mapping out the internal space in AdS/BCFT with Wilson loops

Coccia,

Uhlemann

2021

Preprint

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We study Wilson loops in string theory realizations of AdS/BCFT and wedge holography. The field theories are based on 3d N = 4 long quiver gauge theories engineered by D3, D5 and NS5 branes, and on BCFTs involving 4d N = 4 SYM coupled to such 3d theories. The holographic duals have geometry AdS 4 × S 2 × S 2 warped over a strip. We identify the holographic representation of antisymmetric Wilson loops associated with individual 3d gauge nodes in terms of probe D5-branes. The expectation values obtained holographically are matched to supersymmetric localization computations. Our results yield an identification of regions in the internal space with individual 3d gauge nodes. Connecting to bottom-up braneworld models, this gives a concrete notion of which parts of the 10d solutions correspond to the end-of-the-world brane and which to the remaining bulk. We also construct supersymmetric Janus on the brane embeddings in AdS 5 ×S 5 , which describe surface defects with boundaries and interfaces in N = 4 SYM.

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Looking for (and not finding) a bulk brane

Cited by 33 publications

References 56 publications

Sailing past the End of the World and discovering the Island

Sailing past the End of the World and discovering the Island

Analytic Bootstrap in 2D Boundary Conformal Field Theory: Towards Braneworld Holography

Mapping out the internal space in AdS/BCFT with Wilson loops

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