Gravitational Lorentz Violation and Superluminality via AdS/CFT Duality

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dc.creatorSundrum, Raman
dc.date2007-08-14
dc.date2008-01-03
dc.date.accessioned2026-07-07T11:41:52Z
dc.date.available2026-07-07T11:41:52Z
dc.descriptionA weak quantum mechanical coupling is constructed permitting superluminal communication within a preferred region of a gravitating AdS_5 spacetime. This is achieved by adding a spatially non-local perturbation of a special kind to the Hamiltonian of a four-dimensional conformal field theory with a weakly-coupled AdS dual, such as maximally supersymmetric Yang-Mills theory. In particular, two issues are given careful treatment: (1) the UV-completeness of our deformed CFT, guaranteeing the existence of a ``deformed string theory'' AdS dual, and (2) the demonstration that superluminal effects can take place in AdS, both on its boundary as well as in the bulk. Exotic Lorentz-violating properties such as these may have implications for tests of General Relativity, addressing the cosmological constant problem, or probing "behind'' horizons. Our construction may give insight into the interpretation of wormhole solutions in Euclidean AdS gravity.
dc.description23 pages LaTex. Typo in Eq. (37) corrected. References added
dc.identifierhttps://arxiv.org/abs/0708.1871
dc.identifierhttp://arxiv.org/abs/0708.1871
dc.identifierPhys.Rev.D77:086002,2008
dc.identifierdoi:10.1103/PhysRevD.77.086002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200688
dc.subjectHigh Energy Physics - Theory
dc.titleGravitational Lorentz Violation and Superluminality via AdS/CFT Duality
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