PIRSA:26060040

Video URL

https://pirsa.org/26060040

From the theory of gapless boundaries of 2+1D topological orders to topological Wick rotation

Kong, L. (2026). From the theory of gapless boundaries of 2+1D topological orders to topological Wick rotation. Perimeter Institute for Theoretical Physics. https://pirsa.org/26060040

Kong, Liang. From the theory of gapless boundaries of 2+1D topological orders to topological Wick rotation. Perimeter Institute for Theoretical Physics, Jun. 04, 2026, https://pirsa.org/26060040 

          @misc{ scivideos_PIRSA:26060040,
            doi = {},
            url = {https://pirsa.org/26060040},
            author = {Kong, Liang},
            keywords = {Quantum Matter},
            language = {en},
            title = {From the theory of gapless boundaries of 2+1D topological orders to topological Wick rotation},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2026},
            month = {jun},
            note = {PIRSA:26060040 see, \url{https://scivideos.org/pirsa/26060040}}
          }

Liang Kong Harvard University

Talk numberPIRSA:26060040
Source RepositoryPIRSA
Collection
Talk Type Other
Subject

Abstract

In this talk, I will review the unified mathematical theory of gapped and gapless boundaries of 2+1D topological orders developed in arXiv:1705.01087. As a consequence of this theory, we will derive a surprising result called “topological Wick rotation”, which was proposed to generalize to higher dimensions as a general principle for certain nice QFTs (arXiv:1905.04924). I will also talk about various  generalizations and applications of topological Wick rotation. In particular, I will show how it includes the usual topological holography and sandwich construction as a special case.