# Looking for (and not finding) a bulk brane

@article{Reeves2021LookingF, title={Looking for (and not finding) a bulk brane}, author={Wyatt Reeves and Moshe Rozali and Petar Simidzija and James Sully and Christopher Waddell and David Wakeham}, journal={Journal of High Energy Physics}, year={2021} }

Abstract
When does a holographic CFT with a boundary added to it (a BCFT) also have a ‘good’ holographic dual with a localized gravitating end-of-the-world brane? We argue that the answer to this question is almost never. By studying Lorentzian BCFT correlators, we characterize constraints imposed on a BCFT by the existence of a bulk causal structure. We argue that approximate ‘bulk brane’ singularities place restrictive constraints on the spectrum of a BCFT that are not expected to be true…

## 11 Citations

### BCFT and Islands in two dimensions

- PhysicsJournal of High Energy Physics
- 2022

Abstract
By combining the AdS/BCFT correspondence and the brane world holography, we expect an equivalence relation between a boundary conformal field theory (BCFT) and a gravitational system…

### Brane dynamics of holographic BCFTs

- PhysicsJournal of High Energy Physics
- 2022

In this paper we study various dynamical aspects of the AdS/BCFT correspondence in higher dimensions. We study properties of holographic stress energy tensor by analyzing the metric perturbation in…

### Analytic bootstrap in 2D boundary conformal field theory: towards braneworld holography

- PhysicsJournal of High Energy Physics
- 2022

Abstract
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…

### Bounds on gravitational brane couplings and tomography in AdS3 black hole microstates

- PhysicsJournal of High Energy Physics
- 2022

We study information theoretic properties of planar black hole microstates in 2 + 1 dimensional asymptotically anti-de Sitter spacetime, modeled by black holes with an end-of-the-world brane behind…

### Sailing past the End of the World and discovering the Island

- PhysicsSciPost Physics
- 2022

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.…

### Holographic coarse-graining: correlators from the entanglement wedge and other reduced geometries

- PhysicsJournal of High Energy Physics
- 2022

Abstract
There is some tension between two well-known ideas in holography. On the one hand, subregion duality asserts that the reduced density matrix associated with a limited region of the boundary…

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

- PhysicsJournal of High Energy Physics
- 2022

Abstract
We study Wilson loops in string theory realizations of AdS/BCFT and wedge holography. The field theories are based on 3d $$ \mathcal{N} $$
N
= 4 long quiver gauge theories engineered by…

### The spectrum of boundary states in symmetric orbifolds

- MathematicsJournal of High Energy Physics
- 2022

We give an explicit construction of the complete set of Cardy boundary states that respect the extended chiral algebra for symmetric product orbifolds. The states are labelled by a choice of seed…

### Some results in AdS/BCFT

- Mathematics
- 2021

In this paper, we study the AdS/BCFT construction in the BTZ black hole spacetime. In previous work, AdS/BCFT correspondence was studied in the noncompact BTZ metric without periodic identifications.…

### Universal dynamics of heavy operators in boundary CFT2

- MathematicsJournal of High Energy Physics
- 2022

Abstract
We derive a universal asymptotic formula for generic boundary conditions for the average value of the bulk-to-boundary and boundary Operator Product Expansion coefficients of any unitary,…

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