Oblique collisions and catching-up phenomena of vortex dipoles in a uniform Bose–Einstein condensate

doi:10.1088/1402-4896/ab1220

NTSC-IR

	Oblique collisions and catching-up phenomena of vortex dipoles in a uniform Bose–Einstein condensate
	Yang,Guoquan 1; Zhang,Suying 1; Han,Wei 2
	2019-04-24
发表期刊	Physica Scripta
ISSN	0031-8949
卷号	94 期号:7
摘要	Abstract We investigate the collisional dynamics of two vortex dipoles in a uniform two-dimensional Bose–Einstein condensate. It is found that the dynamics are deeply related to the moving directions and sizes of the initial vortex dipoles. For the oblique collisions of two vortex dipoles with the same size, we find that the vortices in the two initial vortex dipoles recombine into two new vortex dipoles which scatter in the opposite directions. For the catching-up processes of two vortex dipoles with different size, we find that the faster vortex dipole speeds up and passes through the slower vortex dipole. If the size of the vortex dipoles are small, we also observe vortex annihilation and vortex resurrection. The corresponding parameter ranges of different collisional dynamics are discussed.
关键词	Bose–Einstein condensate vortex dipole collision of two vortex dipoles
DOI	10.1088/1402-4896/ab1220
语种	英语
WOS记录号	IOP:0031-8949-94-7-ab1220
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/361003/10745
专题	中国科学院国家授时中心
作者单位	1.Institute of Theoretical Physics, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan, Shanxi 030006, People’s Republic of China 2.Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Sciences, Xi’an 710600, People’s Republic of China
推荐引用方式 GB/T 7714	Yang,Guoquan,Zhang,Suying,Han,Wei. Oblique collisions and catching-up phenomena of vortex dipoles in a uniform Bose–Einstein condensate[J]. Physica Scripta,2019,94(7).
APA	Yang,Guoquan,Zhang,Suying,&Han,Wei.(2019).Oblique collisions and catching-up phenomena of vortex dipoles in a uniform Bose–Einstein condensate.Physica Scripta,94(7).
MLA	Yang,Guoquan,et al."Oblique collisions and catching-up phenomena of vortex dipoles in a uniform Bose–Einstein condensate".Physica Scripta 94.7(2019).