Casimir-like force arising from quantum fluctuations in a slowly moving dilute Bose-Einstein condensate.
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.
Roberts
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DC
Laboratoire de Physique Statistique de l'Ecole normale supérieure, Paris, France.
Pomeau
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Y