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题名: Dynamics of a coupled spin-vortex pair in dipolar spinor Bose-Einstein condensates
作者: Li, TT ;  Yi, S ;  Zhang, YB
刊名: PHYSICAL REVIEW A
出版日期: 2016
卷号: 93, 期号:5, 页码:53602
学科分类: Optics; Physics
DOI: http://dx.doi.org/10.1103/PhysRevA.93.053602
通讯作者: Zhang, YB (reprint author), Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Peoples R China. ;  Yi, S (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: The collisional and magnetic field quench dynamics of a coupled spin-vortex pair in dipolar spinor Bose-Einstein condensates in a double-well potential are numerically investigated in the mean-field theory. Upon a sudden release of the potential barrier the two layers of condensates collide with each other in the trap center with the chirality of the vortex pair exchanged after each collision, showing the typical signature of in-phase collision for the parallel spin-vortex phase, and out-of-phase collision for the antiparallel phase. When quenching the transverse magnetic field, the vortex center in the single-layered condensate starts to make a helical motion with oval-shaped trajectories and the displacement of the center position is found to exhibit a damped simple harmonic oscillation with an intrinsic frequency and damping rate. The oscillation mode of the spin-vortex pair may be tuned by the initial magnetic field and the height of the Gaussian barrier; e.g., the gyrotropic motions for a parallel spin-vortex pair are out of sync with each other in the two layers, while those for the antiparallel pair exhibit a double-helix structure with the vortex centers moving opposite to each other with the same amplitude.
类目[WOS]: Optics ;  Physics, Atomic, Molecular & Chemical
关键词[WOS]: DRIVEN ;  OSCILLATORS ;  GYRATION ;  VORTICES
收录类别: SCI
项目资助者: NSFC [11234008, 11474189, 11434011, 11421063] ;  National 973 Program [2011CB921601] ;  Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF231CJ1]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21662
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Li, TT,Yi, S,Zhang, YB. Dynamics of a coupled spin-vortex pair in dipolar spinor Bose-Einstein condensates[J]. PHYSICAL REVIEW A,2016,93(5):53602.
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