Vortex Rings and Mutual Drag in Trapped Bose-Einstein Condensates
B. Jackson, J. F. McCann, and C. S. Adams
TL;DR
This paper investigates how an object moving in a trapped Bose-Einstein condensate experiences drag, which is influenced by compressibility and vortex ring formation, affecting the mutual drag force.
Contribution
It reveals the role of finite compressibility and vortex rings in modulating mutual drag in trapped Bose-Einstein condensates, a novel insight into superfluid dynamics.
Findings
Finite compressibility induces mutual drag.
Vortex ring formation suppresses mutual drag.
The study advances understanding of superfluid flow in BECs.
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.
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