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arxiv: 0907.0151 · v3 · submitted 2009-07-01 · ✦ hep-th

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Holography from Conformal Field Theory

Idse Heemskerk , Joao Penedones , Joseph Polchinski , James Sully
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classification ✦ hep-th
keywords bulkexpansionlengthconjecturelargelocalplanarabstract
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The locality of bulk physics at distances below the AdS length is one of the remarkable aspects of AdS/CFT duality, and one of the least tested. It requires that the AdS radius be large compared to the Planck length and the string length. In the CFT this implies a large-N expansion and a gap in the spectum of anomalous dimensions. We conjecture that the implication also runs in the other direction, so that any CFT with a planar expansion and a large gap has a local bulk dual. For an abstract CFT we formulate the consistency conditions, most notably crossing symmetry, and show that the conjecture is true in a broad range of CFT's, to first nontrivial order in 1/N^2: any CFT with a gap and a planar expansion is generated via the AdS/CFT dictionary from a local bulk interaction. We establish this result by a counting argument on each side, and also investigate various properties of some explicit solutions.

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