A tour of categorical symmetry

10/07/2021 11:54 am - 1:54 pm

Title: A tour of categorical symmetry

Abstract: I will discuss some perspectives on symmetry coming from the study of topological defects in quantum field theory. I will argue that we should take topological defects themselves to define the symmetries of QFT. This gives us a view of the “category of QFTs”. I will describe some examples of these “categorical symmetries”, their applications, and some open problems.