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| Description | Speaker: John Terning Title: Abelian Instantons Room: 3024 Host: John Terning Abstract: It is usually assumed that 4D instantons can only arise in non-Abelian theories. One can, however, explicitly construct instantons for QED in the background of a Dirac monopole. This is the low-energy effective field theory for fermions interacting with a 't Hooft-Polyakov monopole. This theory posesses both a topological instanton number and 't Hooft zero modes. I will show how such instantons provide the underlying mechanism for the Callan-Rubakov process: monopole-catalyzed baryon decay with a cross section that saturates the unitarity bound. |
| Date | Mon, December 2, 2024 |
| Time | 1:30pm-3:00pm PST |
| Duration | 1 hour 30 minutes |
| Access | Public |
| Created by | High-Energy Seminars |
| Updated | Mon, November 25, 2024 10:13am PST |
| Send Reminder | Yes - 0 days 6 hour 0 minutes before start |
