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Symmetries Near the Horizon

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arxiv 1904.12820 v2 pith:SR2ZOUC3 submitted 2019-04-29 hep-th gr-qc

Henry W. Lin , Juan Maldacena , Ying Zhao This is my paper
classification hep-thgr-qc
keywords generatorsboundarylimitmodeloperatorssymmetriestheorytime
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abstract

We consider a nearly-AdS$_2$ gravity theory on the two-sided wormhole geometry. We construct three gauge-invariant operators in NAdS which move bulk matter relative to the dynamical boundaries. In a two-sided system, these operators satisfy an SL(2) algebra (up to non-perturbative corrections). In a semiclassical limit, these generators act like SL(2) transformations of the boundary time, or conformal symmetries of the two sided boundary theory. These can be used to define an operator-state mapping. A particular large N and low temperature limit of the SYK model has precisely the same structure, and this construction of the exact generators also applies. We also discuss approximate, but simpler, constructions of the generators in the SYK model. These are closely related to the "size" operator and are connected to the maximal chaos behavior captured by out of time order correlators.

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Cited by 2 Pith papers

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