Abstract
It has been well established that, as predicted by Aharonov and Böhm, electron interference patterns can be shifted by the introduction of electromagnetic potentials, even if the electrons never enter the region in which the fields are nonzero. In this paper we prove that, even though the interference pattern shifts, none of the moments of the electron’s positionr, nor of its kinetic momentumπ, are affected. On the other hand, we prove that the expectation value of the operator sina·π (witha a certain fixed vector), which was first introduced by Aharonov, Pendleton and Peterson,does shift.
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