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Vortex Rings and Mutual Drag in Trapped Bose-Einstein Condensates

arXiv:cond-mat/9901087 · doi:10.1103/PhysRevA.60.4882

Abstract

We study the drag on an object moving through a trapped Bose-Einstein condensate, and show that finite compressibility leads to a mutual drag, which is subsequently suppressed by the formation of a vortex ring.

4 pages, 5 figures, REVTeX. To appear in Phys. Rev. A