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Reconstruction of Bulk Operators within the Entanglement Wedge in Gauge-Gravity Duality

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TLDR
A simple theorem in quantum information theory is proved, which implies that bulk operators in the anti-de Sitter/conformal field theory (AdS/CFT) correspondence can be reconstructed as CFT operators in a spatial subregion A, provided that they lie in its entanglement wedge.
Abstract
In this Letter we prove a simple theorem in quantum information theory, which implies that bulk operators in the anti-de Sitter/conformal field theory (AdS/CFT) correspondence can be reconstructed as CFT operators in a spatial subregion A, provided that they lie in its entanglement wedge. This is an improvement on existing reconstruction methods, which have at most succeeded in the smaller causal wedge. The proof is a combination of the recent work of Jafferis, Lewkowycz, Maldacena, and Suh on the quantum relative entropy of a CFT subregion with earlier ideas interpreting the correspondence as a quantum error correcting code.

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Journal ArticleDOI

Replica Wormholes and the Entropy of Hawking Radiation

TL;DR: In this article, the authors show that the discrepancy between the von Neumann entropy as calculated by Hawking and the requirements of unitarity is fixed by including new saddles in the gravitational path integral.
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The entropy of bulk quantum fields and the entanglement wedge of an evaporating black hole

TL;DR: In this article, the authors examined the effect of bulk quantum effects on quantum extremal surfaces (QESs) and the resulting entanglement wedge in a simple two-boundary 2d bulk system defined by Jackiw-Teitelboim gravity coupled to a 1+1 CFT.
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Entanglement Wedge Reconstruction and the Information Paradox

TL;DR: In this paper, it was shown that there is a phase transition in the location of the quantum Ryu-Takayanagi surface, at precisely the Page time, at an infalling time approximately the scrambling time β/2πlogSBH into the past.
Posted Content

Replica wormholes and the black hole interior

TL;DR: In this paper, the Page transition of an evaporating black hole from holographic computations of entanglement entropy has been obtained using the replica trick, from geometries with a spacetime wormhole connecting the different replicas.
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Traversable wormholes via a double trace deformation

TL;DR: In this paper, a quantum matter stress tensor with negative average null energy, whose gravitational backreaction renders the Einstein-Rosen bridge traversable, has been shown to be related to quantum teleportation.
References
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Journal ArticleDOI

Decomposition of entanglement entropy in lattice gauge theory

TL;DR: In this paper, entanglement entropy between regions of space in lattice gauge theory has been investigated, and it is shown that the entropy of the edge states is the dominant contribution to the entropy.
Journal ArticleDOI

Constructing local bulk observables in interacting AdS/CFT

TL;DR: In this article, the authors show how to construct these bulk observables by requiring that the bulk operators commute at spacelike separation, which is related to bulk Feynman diagrams.
Journal ArticleDOI

Generalized entropy and higher derivative gravity

TL;DR: In this paper, an extension of the Ryu-Takayanagi prescription for curvature squared theories of gravity in the bulk, and comment on a prescription for more general theories, is presented.
Journal ArticleDOI

Causal holographic information

TL;DR: In this paper, a measure of holographic information based on a causal wedge construction is proposed to quantify the amount of information contained in a given spatial region in field theory, which is an extremal surface on the boundary of the bulk causal wedge.
Journal ArticleDOI

Wormholes, Emergent Gauge Fields, and the Weak Gravity Conjecture

TL;DR: In this paper, the authors revisited the question of reconstructing bulk gauge fields as boundary operators in AdS/CFT, and argued that this leads to a new argument for the "principle of completeness" which states that the charge lattice of a gauge theory coupled to gravity must be fully populated.
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