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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:17080004  ( MP4 Medium Res , MP3 , PDF ) Which Format?
From 3D TQFTs to 4D models with defects
Speaker(s): Bianca Dittrich
Abstract: I will explain a general strategy to lift (2+1)D topological phases, in particular string nets, to (3+1)D models with line defects. This allows a systematic construction of (3+1)D topological theories with defects, including an improved version of the Walker-Wang Model. It has also an interesting application to quantum gravity as it leads to quantum geometry realizations for which all geometric operators have discrete and bounded spectra. I will furthermore comment on some interesting (self-) duality relations that emerge in these constructions.
Date: 04/08/2017 - 11:00 am
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