High Energy Theory Seminar
https://caltech.zoom.us/j/795527605, meeting ID 795 527 605
In ‘90s, it is claimed that the QCD with massless adjoint quark in 1+1-dimensions is confined, although naively the fermions cannot screen the Wilson line in the fundamental representation. In this talk, we will see that the confinement can be explained from the topological line operators live in the theory. In particular, non-invertible topological lines, which do not correspond to a symmetry, play a crucial role. Based on a ongoing work with Zohar Komargodski, Konstantinos Roumpedakis and Sahand Seifnashri.