Ahranov-Bohm Effect for *Electric* Potential Field?

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1. Oct 26, 2015

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The AB effect has been proved experimentally many times for the case where the EM field is strictly a magnetic flux in a solenoid. But, from what I have read, the AB effect for just an electric potential alone has not been demonstrated yet. Do you believe the AB effect for electric potentials will eventually be proven? Comments?