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hep-th2024
Cheshire terms, Aharonov-Bohm effects, and axions
Shi Chen, Aleksey Cherman, Gongjun Choi +1
We discuss unusual terms that can appear in field theories that allow global vortices. These `Cheshire terms' induce Aharonov-Bohm effects for some particles that move arou…
hep-lat2024
Generalized BKT Transitions and Persistent Order on the Lattice
Evan Berkowitz, Seth Buesing, Shi Chen +2
The BKT transition in low-dimensional systems with a global symmetry separates a gapless conformal phase from a trivially gapped, disordered phase, and is driven by vortex p…