Monopoles, Scattering, and Generalized Symmetries

Abstract: I will discuss the problem of electrically charged, massless fermions scattering off magnetic monopoles. The interpretation of the outgoing states has long been a puzzle, as they can carry fractional quantum numbers. We argue that such outgoing particles live in the twisted sector of a topological co-dimension 1 surface, which ends topologically on the monopole. This surface is in general noninvertible, and as such the outgoing radiation not only carries unconventional flavor quantum numbers, but is trailed by a topological field theory, which is a new prediction.

HEP - phenomenologyHEP - theorymathematical physicscategory theory

Audience: researchers in the topic

Symmetry Seminar

Series comments: Weekly seminar on generalized symmetries in QFT, string theory and related topics.