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PIRSA:22120050

Video URL

https://pirsa.org/22120050

Equivariant Higher Berry classes and chiral states

Sopenko, N. (2022). Equivariant Higher Berry classes and chiral states. Perimeter Institute for Theoretical Physics. https://pirsa.org/22120050

Nikita Sopenko Institute for Advanced Study (IAS) - School of Natural Sciences (SNS)

Talk numberPIRSA:22120050
DOI10.48660/22120050
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

I will talk about the generalization of Berry classes for quantum lattice spin systems. It defines invariants of topologically ordered states or families thereof. In particular, its equivariant version for 2d gapped states gives the zero-temperature Hall conductance and its various generalizations. I will also discuss the construction of chiral states realizing the topological order associated with a unitary rational vertex operator algebra for which these invariants are non-trivial

Zoom link:  https://pitp.zoom.us/j/99910103969?pwd=VlVHVGRiV29iVEFyTXZyR3ovMkRaQT09