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Traversable wormholes in AdS and bounds on information transfer
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We analyze the amount of information that can be sent through the traversable wormholes of Gao, Jafferis, and Wall. Although we find that the wormhole is open for a proper time shorter than the Planck time, the transmission of a signal through the wormhole can sometimes remain within the semiclassical regime. For black holes with horizons of order the AdS radius, information cannot be reliably sent through the wormhole. However, black holes with horizon radius much larger than the AdS radius do allow for the transmission of a number of quanta of order the horizon area in AdS units. More information can be sent through the wormhole by increasing the number of light fields contributing to the negative energy. Our bulk computations agree with a boundary analysis based on quantum teleportation.
Forward citations
Cited by 2 Pith papers
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Simple Perturbatively Traversable Wormholes from Bulk Fermions
A Weyl fermion's quantum stress-energy on a Z2 quotient of rotating BTZ times a circle gives a negative averaged null energy, making the wormhole traversable.
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Traversable Asymptotically Flat Wormholes with Short Transit Times
Quantum back-reaction from cosmic-string fluctuations can make a non-extremal charged wormhole traversable for early signals, with transit time d plus logarithmic terms, approaching the minimum allowed in higher dimensions.
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