中国物理B ›› 2013, Vol. 22 ›› Issue (5): 50311-050311.doi: 10.1088/1674-1056/22/5/050311

• GENERAL • 上一篇    下一篇

Superposition solitons in two-component Bose-Einstein condensates

王晓敏, 李秋艳, 李再东   

  1. Department of Applied Physics, Hebei University of Technology, Tianjin 300401, China
  • 收稿日期:2012-09-15 修回日期:2012-11-21 出版日期:2013-04-01 发布日期:2013-04-01
  • 基金资助:
    Project supported by the Natural Science Foundation of Hebei Province, China (Grant Nos. A2012202022 and A2012202023), the Key Project of the Chinese Ministry of Education (Grant No. 2011015), and the Hundred Innovation Talents Supporting Project of Hebei Province, China (Grant No. CPRC014).

Superposition solitons in two-component Bose-Einstein condensates

Wang Xiao-Min (王晓敏), Li Qiu-Yan (李秋艳), Li Zai-Dong (李再东)   

  1. Department of Applied Physics, Hebei University of Technology, Tianjin 300401, China
  • Received:2012-09-15 Revised:2012-11-21 Online:2013-04-01 Published:2013-04-01
  • Contact: Li Zai-Dong E-mail:zdli2003@yahoo.com
  • Supported by:
    Project supported by the Natural Science Foundation of Hebei Province, China (Grant Nos. A2012202022 and A2012202023), the Key Project of the Chinese Ministry of Education (Grant No. 2011015), and the Hundred Innovation Talents Supporting Project of Hebei Province, China (Grant No. CPRC014).

摘要: We develope the Hirota bilinear method and obtain the exact one and two superposition soliton solutions for two-component Bose-Einstein condensates. The conversion of three kinds of solitons including the superposition solitons, bright-bright solitons, and dark-bright solitons is discussed. With the energy analysis, we find that the superposition soliton state is an excitation state for this system. Moreover, the collision of two superposition solitons is found to be elastic.

关键词: superposition solitons, excitation states, Hirota bilinear method

Abstract: We develope the Hirota bilinear method and obtain the exact one and two superposition soliton solutions for two-component Bose-Einstein condensates. The conversion of three kinds of solitons including the superposition solitons, bright-bright solitons, and dark-bright solitons is discussed. With the energy analysis, we find that the superposition soliton state is an excitation state for this system. Moreover, the collision of two superposition solitons is found to be elastic.

Key words: superposition solitons, excitation states, Hirota bilinear method

中图分类号:  (Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)

  • 03.75.Lm
05.30.Jp (Boson systems)