[Category and Topological Order Seminar] Levin-Wen models for 2+1D topological phases I


Speaker:Yuting Hu

Date: 2022/06/22

Time: 13:30 -15:00

Tencent Meeting:660 7557 3050



Levin-Wen models (string network models) are effective lattice models for a large class of 2+1D topological phases. They can be viewed as discrete topological quantum field theories with generalized gauge symmetries, in the language of tensor categories. In this talk, I will try to explain how the tensor category provides a conceptual framework for the gauge structure in these models. I will review the properties in the Levin-Wen models and various extensions of these models.