Rapidly rotating Bose-Einstein condensates∗ Alexander Fetter ...

• this vortex with large filled core precesses around trap
center
• can also create vortex with (small) empty core [13]
that also precesses
– theory predicts ˙φ/2π ≈ 1.58 ± 0.16 Hz, and
– experiment finds ˙φ/2π ≈ 1.8 ± 0.1 Hz
• see no outward radial motion for ∼ 1 s, so dissipation
is small on this time scale
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