中国物理B ›› 2006, Vol. 15 ›› Issue (2): 296-300.doi: 10.1088/1009-1963/15/2/010

• GENERAL • 上一篇    下一篇

The propagation of solitary waves in clouds of Bose--Einstein condensed atoms

敖胜美, 颜家壬   

  1. Department of Physics, Hunan Normal University, Changsha 410081,China
  • 收稿日期:2005-02-06 修回日期:2005-08-07 出版日期:2006-02-20 发布日期:2006-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10375022).

The propagation of solitary waves in clouds of Bose--Einstein condensed atoms

Ao Sheng-Mei (敖胜美), Yan Jia-Ren (颜家壬)   

  1. Department of Physics, Hunan Normal University, Changsha 410081,China
  • Received:2005-02-06 Revised:2005-08-07 Online:2006-02-20 Published:2006-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10375022).

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摘要： The Gross--Pitaevskii equation which describes the motion of a Bose--Einstein condensed (BEC) atom in an elongated trap is solved analytically, and a solitary-wave solution is obtained in the low-density case without neglecting the effect of the interatomic interaction on the transverse function. It is shown that this effect leads to the velocity of the solitary wave slowing down and the profile of the solitary wave widening.

Abstract: The Gross--Pitaevskii equation which describes the motion of a Bose--Einstein condensed (BEC) atom in an elongated trap is solved analytically, and a solitary-wave solution is obtained in the low-density case without neglecting the effect of the interatomic interaction on the transverse function. It is shown that this effect leads to the velocity of the solitary wave slowing down and the profile of the solitary wave widening.

Key words: solitary wave, BEC atom, Gross--Pitaevskii equation

中图分类号:  (Boson systems)

  • 05.30.Jp
05.45.Yv (Solitons) 37.10.De (Atom cooling methods)