Internal Frame Dragging and a Global Analog of the Aharonov-Bohm Effect
John March-Russell, John Preskill, Frank Wilczek
Abstract
It is shown that the breakdown of a global symmetry group to a discrete subgroup can lead to analogues of the Aharonov-Bohm effect. At sufficiently low momentum, the cross-section for scattering of a particle with nontrivial 2 charge off a global vortex is almost equal to (but definitely different from) maximal Aharonov-Bohm scattering; the effect goes away at large momentum. The scattering of a spin-1/2 particle off a magnetic vortex provides an amusing experimentally realizable example.
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