Kelvin-Tkachenko waves of few-vortex arrays in trapped Bose-Einstein condensates

被引：17
作者：
Simula, T. P. [1 ,2 ]
Machida, K. [2 ]
机构：
[1] Monash Univ, Sch Phys, Clayton, Vic 3800, Australia
[2] Okayama Univ, Dept Phys, Okayama 7008530, Japan
来源：
PHYSICAL REVIEW A | 2010年 / 82卷 / 06期
基金：
日本学术振兴会;
关键词：
OSCILLATIONS; VORTICES; HYDRODYNAMICS; STABILITY; LINES;
D O I：
10.1103/PhysRevA.82.063627
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have calculated the low-lying elementary excitations of three-dimensional few-vortex arrays in trapped Bose-Einstein condensates. The number of different Kelvin-Tkachenko vortex wave branches found matches the number of vortices in the condensate. The lowest odd-parity modes exhibit superfluid gyroscopic vortex motion. Experimentally, these modes could be excited and observed individually or in connection with the formation and decay of quantum turbulence.
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页数：5
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