two gamma event

High Energy


Joint Theory Seminar: Temple M He

Description Speaker: Temple He
Title: New Magnetic Symmetries in (d+2)-Dimensional QED
Host: John Terning
Room: 432

Previous analyses of asymptotic symmetries in QED have shown that the subleading soft photon theorem implies a Ward identity corresponding to a charge generating divergent large gauge transformations on the asymptotic states at null infinity. In this work, we demonstrate that the subleading soft photon theorem is equivalent to a more general Ward identity. The charge corresponding to this Ward identity can be decomposed into an electric piece and a magnetic piece. The electric piece generates the Ward identity that was previously studied, but the magnetic piece is novel, and implies the existence of an additional asymptotic "magnetic" symmetry in QED.
Date Mon, February 3, 2020
Time 1:30pm-2:30pm PST
Duration 1 hour
Access Public
Created by High-Energy Seminars
Updated Thu, January 9, 2020 1:58pm PST
Send Reminder Yes  -  0 days 4 hour 0 minutes before start

Recent changes RSS feed Creative Commons License Powered by PHP