Scientific Calendar Event

Starts 18 Apr 2024 16:00
Ends 18 Apr 2024 17:30
Central European Time
L. Stasi Seminar Room and Zoom

It’s been known since the work of Callan and Rubakov that a generic gauge theory harbours a riddle: the scattering of light fermions off heavy monopoles necessitates exotic outgoing states with fractional occupation numbers. I will first explain how we can finally make sense of these outgoing states in the modern language of generalised symmetries: They arise as states in a twisted Hilbert space, which is generated by operators at the edge of a topological surface. I will then apply this general formalism to the original case of interest, the Standard Model itself, which exhibits a number of new features. I will finally discuss various other scenarios, including some that require non-invertible symmetry defects.

To join via Zoom:

Meeting ID: 931 2430 7428

Passcode:  691466