期刊
PHYSICAL REVIEW A
卷 81, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.81.023603
关键词
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资金
- Academy of Finland
- Emil Aaltonen foundation
- JSPS
- Vaisala foundation
- Swedish National Research Council, Vetenskapsradet
- Jenny and Antti Wihuri Foundation
Motivated by a recent demonstration of cyclic addition of quantized vorticity into a Bose-Einstein condensate, the vortex pump, we study dynamical instabilities and core sizes of giant vortices. The core size is found to increase roughly as a square-root function of the quantum number of the vortex, whereas the strength of the dynamical instability either saturates to a fairly low value or increases extremely slowly for large quantum numbers. Our studies suggest that giant vortices of very high angular momenta may be achieved by gradually increasing the operation frequency of the vortex pump.
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