Entanglement Entropy for , , deformed holographic CFT
arXiv:2010.15759 · doi:10.1007/JHEP02(2021)096
Abstract
We derive the geodesic equation for determining the Ryu-Takayanagi surface in deformed by single trace deformation for generic values of for which the background is free of singularities. For generic values of , Lorentz invariance is broken, and the Ryu-Takayanagi surface embeds non-trivially in time as well as spatial coordinates. We solve the geodesic equation and characterize the UV and IR behavior of the entanglement entropy and the Casini-Huerta -function. We comment on various features of these observables in the parameter space. We discuss the matching at leading order in small expansion of the entanglement entropy between the single trace deformed holographic system and a class of double trace deformed theories where a strictly field theoretic analysis is possible. We also comment on expectation value of a large rectangular Wilson loop-like observable.
arXiv comment29 pages, 7 figures
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