Formation and dynamics of vortices in a Bose–Einstein condensate with a moving impenetrable disk-shaped potential

doi:10.1088/1054-660X/26/10/105502

NTSC-IR

	Formation and dynamics of vortices in a Bose–Einstein condensate with a moving impenetrable disk-shaped potential
	Chen,Guang-Ping 1,2,3; Dong,Biao 1,2; Wang,Lin-Xue 1,2; Xie,Zheng-Wei 4; Zhang,Shou-Gang 1
	2016-08-31
发表期刊	Laser Physics
ISSN	1054-660X
卷号	26 期号:10
摘要	Abstract We consider a quasi-two-dimensional Bose–Einstein condensate with a moving impenetrable disk-shaped potential. By performing direct numerical simulations, we investigate the formation and dynamics of the vortices in the wake as a function of the moving velocity and the radius of the potential. For moderate moving velocity, we observe the formation of a bound vortex pair in the wake of the potential. Its shedding period and associated patterns depend on the radius of the potential, showing V-shaped, periodic, or complex wakes. More interestingly, at high velocity both the vortex pair and vortex dipole can be formed simultaneously. Furthermore, the activation time for vortex formation is investigated for different velocities. We also give an experimental protocol to observe these phenomena in future experiments.
关键词	Bose–Einstein condensate impenetrable disk-shaped potential vortex dipole
DOI	10.1088/1054-660X/26/10/105502
语种	英语
WOS记录号	IOP:1054-660X-26-10-105502
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/10684
专题	中国科学院国家授时中心
作者单位	1.Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Sciences, Xi’an 710600, People’s Republic of China 2.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 3.School of Physics and Mech-tronic Engineering, Sichuan University of Art and Science, Dazhou 635000, People’s Republic of China 4.College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610066, People’s Republic of China
推荐引用方式 GB/T 7714	Chen,Guang-Ping,Dong,Biao,Wang,Lin-Xue,等. Formation and dynamics of vortices in a Bose–Einstein condensate with a moving impenetrable disk-shaped potential[J]. Laser Physics,2016,26(10).
APA	Chen,Guang-Ping,Dong,Biao,Wang,Lin-Xue,Xie,Zheng-Wei,&Zhang,Shou-Gang.(2016).Formation and dynamics of vortices in a Bose–Einstein condensate with a moving impenetrable disk-shaped potential.Laser Physics,26(10).
MLA	Chen,Guang-Ping,et al."Formation and dynamics of vortices in a Bose–Einstein condensate with a moving impenetrable disk-shaped potential".Laser Physics 26.10(2016).