GQFI-WST Seminar: Onkar Parrikar "Building tensor networks for holographic states "
In this talk, Onkar Parrikar (Stanford) discusses a one-parameter family of states in two-dimensional holographic conformal field theories which are constructed via the Euclidean path integral of an effective theory on a family of hyperbolic slices in the dual bulk geometry. The effective theory in question is the CFT flowed under a TT* deformation, which "folds" the boundary CFT towards the bulk time-reflection symmetric slice. Onkar proposes that these novel Euclidean path integral states in the CFT can be interpreted as continuous tensor network (CTN) states, and argues that these CTN states satisfy a Ryu-Takayanagi-like minimal area upper bound on the entanglement entropies of boundary intervals, with the coefficient being equal to 1/4G_N. The CTN corresponding to the bulk time-reflection symmetric slice saturates this bound.
The Virtual Seminar Series “GQFI-Warsaw String Theory” (GQFI-WST) is a joint initiative between the strings/holography groups at the Albert Einstein Institute (AEI) in Potsdam and the University Warsaw. The calendar for upcoming GQFI-WST seminars can be found here: https://gqfi.aei.mpg.de/node/3.
This talk is primarily based on arXiv:2012.05247 [hep-th] (https://arxiv.org/abs/2012.05247).
This talk was recorded on June 2nd, 2021 at the Albert Einstein Institute in Potsdam-Golm.