title: Persistent Superfluid Flow Arising from the He-McKellar-Wilkens Effect in Molecular Dipolar Condensates.
abstract: 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.
authors.affiliation: School of Physics, University of Melbourne, Victoria 3010, Australia.
authors.forename: A A
authors.initials: AA
authors.lastname: Wood
authors.affiliation: ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, University of Melbourne, Victoria 3010, Australia.
authors.forename: B H J
authors.initials: BH
authors.lastname: McKellar
authors.affiliation: School of Physics, University of Melbourne, Victoria 3010, Australia.
authors.forename: A M
authors.initials: AM
authors.lastname: Martin