Phys. Rev. Lett. 95, 145303 (2005) [4 pages]Casimir-Like Force Arising from Quantum Fluctuations in a Slowly Moving Dilute Bose-Einstein CondensateReceived 30 March 2005; published 30 September 2005 We calculate a force due to zero-temperature quantum fluctuations on a stationary object in a moving superfluid flow. We model the object by a localized potential varying only in the flow direction and model the flow by a three-dimensional weakly interacting Bose-Einstein condensate at zero temperature. We show that this force exists for any arbitrarily small flow velocity and discuss the implications for the stability of superfluid flow. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.145303
DOI:
10.1103/PhysRevLett.95.145303
PACS:
67.57.De, 03.75.Kk, 47.37.+q
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