BIMSA > Category and Topological Order Seminar What's done cannot be undone
What's done cannot be undone
Organizer
Hao Zheng
Speaker
Shuheng Shao
Time
Thursday, October 13, 2022 9:00 PM - 10:30 PM
Venue
Online
Online
Zoom 204 323 0165 (BIMSA)
Abstract
I will give an overview on non-invertible global symmetries in general spacetime dimensions, based on a series of work from last year. A crucial element in these constructions is the gauging of a higher-form global symmetry in either half of the spacetime (half gauging), or along a higher codimensional manifold (higher gauging). I will then discuss a new non-invertible global symmetry in the real-world QED and QCD, and argue that the neutral pion decay can be understood in terms of this generalized global symmetry.