Sep 5, 2025 11:00 am
Rhondale Tso Seminar Room, Loomis 236
- Sponsor
- Physics Department
- Speaker
- Gongjun Choi (University of Minnesota)
- Contact
- Brandy Koebbe
- bkoebbe@illinois.edu
- Views
- 88
- Originating Calendar
- Physics - High Energy Physics Seminar
We discuss unusual θ terms that can appear in field theories that allow global vortices. These "Cheshire θ terms" induce Aharonov-Bohm effects for some particles that move around vortices. For example, a Cheshire θ term can appear in QCD coupled to an axion and induces Aharonov-Bohm effects for baryons and leptons moving around axion strings. We point out a potential experimental signature left on the spectrum of gravitational waves from axion cosmic string network by the Cheshire θ term.