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KIAS HEP seminars

Cheshire θ terms, Aharonov-Bohm effects, and axions

by Dr Gongjun Choi (U. Minnesota)

→ Asia/Seoul
Building 1, 1st floor, Kim Dongmyeong Lecture Room

Building 1, 1st floor, Kim Dongmyeong Lecture Room
Description

Title: Cheshire θ terms, Aharonov-Bohm effects, and axions

Speaker: Dr. Gongjun Choi (U. Minnesota)

Abstract: 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.

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