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High Energy Theory Seminar

Friday, May 1, 2020
11:00am to 12:00pm
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1+1d adjoint QCD and non-invertible topological lines
Kantaro Ohmori, SCGP, Stony Brook University,, 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.

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