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Soliton characteristics of two-dimensional condensates with two- and three-body interaction

Zhang Wei-Xi She Yan-Chao Wang Deng-Long

Soliton characteristics of two-dimensional condensates with two- and three-body interaction

Zhang Wei-Xi, She Yan-Chao, Wang Deng-Long
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  • Received Date:  19 September 2010
  • Accepted Date:  27 October 2010
  • Published Online:  15 July 2011

Soliton characteristics of two-dimensional condensates with two- and three-body interaction

  • 1. (1)Department of Physics and Electronic Science, Tongren University,Tongren 554300,China; (2)Department of Physics and Key Laboratory of Quantum Engineering and Micro-Nano Energy Technology of the Education Bureau of Hunan Province, Xiangtan University,Xiangtan 411105,China

Abstract: By using multiple-scale method, we study analytically the soliton characteristics of the two-dimensional condensates with two- and three-body interaction. The results show that a ring dark soliton can be found in the condensates when the two-body interaction is repulsive and three-body interaction is attractive. With the strength of the three-body interaction decreasing, the height of the center peak of the ring dark soliton decreases. When the three-body interaction vanishes, the ring dark soliton becomes a perfect dark soliton. If the two- and the three-body interaction are both repulsive,the width and the amplitude of the dark soliton decrease with the strength of the three-body interaction increasing. Especially, if the strength of the three-body interaction is large, which is on the order of that of the two-body interaction, the condensat collapse takes place.

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