Persistent Superfluid Flow Arising from the He-McKellar-Wilkens Effect in Molecular Dipolar Condensates
AA Wood, BHJ McKellar, AM Martin
PHYSICAL REVIEW LETTERS | AMER PHYSICAL SOC | Published : 2016
We show that the He-McKellar-Wilkens effect can induce a persistent flow in a Bose-Einstein condensate of polar molecules confined in a toroidal trap, with the dipolar interaction mediated via an electric dipole moment. For Bose-Einstein condensates of atoms with a magnetic dipole moment, we show that although it is theoretically possible to induce persistent flow via the Aharonov-Casher effect, the strength of the electric field required is prohibitive. We also outline an experimental geometry tailored specifically for observing the He-McKellar-Wilkens effect in toroidally trapped condensates.
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Awarded by Australian Research Council
A. A. W. and A. M. M. were supported by the Australian Research Council (DP150101704). B. H. J. M. was supported in part by the Australian Research Council Grant to the ARC Centre of Excellence for Particle Physics at the Terascale (CoEPP).