Vortex shedding and drag in dilute Bose-Einstein condensates

Details Vortex shedding and drag in dilute Bose-Einstein condensates Vortex shedding and drag in dilute Bose-Einstein condensates

2000-04-26

arxiv.org/abs/cond-mat/0004430v1

Physics

Condensed Matter

10 pages, 5 figures. submitted to J. Phys. B for the special issue on Coherent Matter Waves

Scientific paper

10.1088/0953-4075/33/19/317

Above a critical velocity, the dominant mechanism of energy transfer between a moving object and a dilute Bose-Einstein condensate is vortex formation. In this paper, we discuss the critical velocity for vortex formation and the link between vortex shedding and drag in both homogeneous and inhomogeneous condensates. We find that at supersonic velocities sound radiation also contributes significantly to the drag force.

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