Exact solitons in the Gross-Pitaevskii equation with time-modulated nonlinearity

被引：2
|
作者：
Liang, Z. X. [1 ]
Zhang, Z. D. [1 ]
机构：
[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res & Int Ctr Mat Phys, Shenyang 110016, Peoples R China
来源：
MODERN PHYSICS LETTERS B | 2007年 / 21卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Bose-Einstein condensates; soliton; Feshbach resonance;
D O I：
10.1142/S0217984907012864
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Exact solitonic solutions of the Gross-Pitaevskii equation with time-modulated nonlinearity of a(t) = a(0) / (t + t(0)) are obtained. With help of these solutions, we analyze the properties of Feshbach-managed solitons in Bose-Einstein condensates in details. Our results show that the parameters of atomic matter waves can be manipulated by proper variation of the scattering length. In particular, an exact two-solition solution is given, from which, it is shown that the separation between the neighboring solitons can be effectively maintained by allowing the solitons to have unequal initial amplitudes.
引用
收藏
页码：383 / 390
页数：8
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