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Category and Topological Order Seminar
Duality defects from lattice, gauging and symmetry TFT
Duality defects from lattice, gauging and symmetry TFT
Organizer
Speaker
Yunqin Zheng
Time
Tuesday, December 20, 2022 4:00 PM - 5:00 PM
Venue
Online
Online
Tencent 607 3645 0351
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Abstract
Recent years have witnessed an explosion of studies of the non-invertible symmetries in various dimensions. In this talk, I will revisit the most vanilla type of non-invertible symmetry — Kramers-Wannier duality symmetry in (1+1)d, from three different perspectives: 1. lattice; 2. field theory; 3. Symmetry TFT. I will explain the construction of non-invertible defects, their fusion rules, and F-symbols.