The magnetic field due to the photon rest mass mph modifies the standard
results of the Aharonov-Bohm effect for electrons, and of other recent quantum
effects. For the effect involving a coherent superposition of beams of
particles with opposite electromagnetic properties, by means of a table-top
experiment, the limit mphx10−51g is achievable, improving by 6 orders
of magnitude that derived by Boulware and Deser for the Aharonov-Bohm effect.Comment: 5 page