中国物理B ›› 2019, Vol. 28 ›› Issue (11): 116701-116701.doi: 10.1088/1674-1056/ab457e

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Propagation of dark soliton interacting with domain wall in two immiscible Bose-Einstein condensates

Lang Zheng(郑浪), Yi-Cai Zhang(张义财), Chao-Fei Liu(刘超飞)   

  1. 1 Jiangxi Provincial Education Examination Authority, Nanchang 330038, China;
    2 School of Science, Jiangxi University of Science and Technology, Ganzhou 341000, China;
    3 School of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510006, China
  • 收稿日期:2019-05-27 修回日期:2019-09-12 出版日期:2019-11-05 发布日期:2019-11-05
  • 通讯作者: Chao-Fei Liu E-mail:liuchaofei0809@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61565007, 11875149, 11747079, and 11874127), the Science Fund from the Department of Science and Technology of Jiangxi Province, China (Grant Nos. 20162BCB23049 and 20171ACB21045), the Youth Jinggang Scholars Program in Jiangxi Province, China, and the Program of Qingjiang Excellent Yong Talents, Jiangxi University of Science and Technology, China.

Propagation of dark soliton interacting with domain wall in two immiscible Bose-Einstein condensates

Lang Zheng(郑浪)1,2, Yi-Cai Zhang(张义财)3, Chao-Fei Liu(刘超飞)2   

  1. 1 Jiangxi Provincial Education Examination Authority, Nanchang 330038, China;
    2 School of Science, Jiangxi University of Science and Technology, Ganzhou 341000, China;
    3 School of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510006, China
  • Received:2019-05-27 Revised:2019-09-12 Online:2019-11-05 Published:2019-11-05
  • Contact: Chao-Fei Liu E-mail:liuchaofei0809@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61565007, 11875149, 11747079, and 11874127), the Science Fund from the Department of Science and Technology of Jiangxi Province, China (Grant Nos. 20162BCB23049 and 20171ACB21045), the Youth Jinggang Scholars Program in Jiangxi Province, China, and the Program of Qingjiang Excellent Yong Talents, Jiangxi University of Science and Technology, China.

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摘要： Reflection and transmission are two behaviors of wave propagating to an interface. The immiscible binary mixtures of Bose-Einstein condensates can form the symmetry-breaking state, in which the domain wall on the center can serve as the interface. In this study, we explore in detail the propagation of a dark soliton interacting with the domain wall in the harmonic trap. We find that the low-energy dark soliton is easy to form the transmission and the high-energy dark soliton trends to reflect from the domain wall. Both reflection and transmission of dark soliton on the domain wall induce the sound radiation. But the sound radiation in the reflection derives from the collective oscillation of condensates, and it in the transmission comes not only from the collective oscillation, but also from the condensate filling in the dark soliton.

关键词: Bose-Einstein condensate, dark soliton

Abstract: Reflection and transmission are two behaviors of wave propagating to an interface. The immiscible binary mixtures of Bose-Einstein condensates can form the symmetry-breaking state, in which the domain wall on the center can serve as the interface. In this study, we explore in detail the propagation of a dark soliton interacting with the domain wall in the harmonic trap. We find that the low-energy dark soliton is easy to form the transmission and the high-energy dark soliton trends to reflect from the domain wall. Both reflection and transmission of dark soliton on the domain wall induce the sound radiation. But the sound radiation in the reflection derives from the collective oscillation of condensates, and it in the transmission comes not only from the collective oscillation, but also from the condensate filling in the dark soliton.

Key words: Bose-Einstein condensate, dark soliton

中图分类号:  (Ultracold gases, trapped gases)

  • 67.85.-d
03.75.Kk (Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow) 03.75.Mn (Multicomponent condensates; spinor condensates) 05.30.Jp (Boson systems)