Spatiotemporal vortex rings in atomic Bose-Einstein condensates

被引：4
|
作者：
Chelpanova, O. G. [1 ]
Kuriatnikov, Y., I [1 ]
Vilchinskii, S. [1 ]
Yakimenko, A., I [1 ]
机构：
[1] Taras Shevchenko Natl Univ Kyiv, Dept Phys, 64-13 Volodymyrska Str, UA-01601 Kiev, Ukraine
来源：
LOW TEMPERATURE PHYSICS | 2019年 / 45卷 / 08期
关键词：
BEC; ultracold gases; vortex; vortex rings; DENSITY;
D O I：
10.1063/1.5116542
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We investigate spatiotemporal vortex rings with phase dislocation both in space and time. It is demonstrated that these structures naturally appear as a periodical in time edge phase dislocation at the low-density region of a perturbed atomic Bose-Einstein condensate. The condition of formation, dynamics and stability of the spatiotemporal vortex rings are investigated for repulsive and attractive interatomic interactions. These theoretical findings open up a perspective for experimental observation of novel type of topological coherent structures in ultracold gases. Published under license by AIP Publishing.
引用
收藏
页码：908 / 913
页数：6
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