Stabilised bright solitons in Bose Einstein condensates in an expulsive parabolic and complex potential
Stabilised bright solitons in Bose Einstein condensates in an expulsive parabolic and complex potential
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DOI：
10.1088/1674-1056/19/7/070502
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发表时间：
2010-07
影响因子：
1.7
通讯作者：
Zhang Tao;Yang Zhan-ying;Zhao Li-chen;Yue Ruihong
中科院分区：
文献类型：
--
作者：
Zhang Tao;Yang Zhan-ying;Zhao Li-chen;Yue Ruihong
利用Darboux变换，得到了描述玻色-爱因斯坦凝聚体中亮孤子动力学的一维非线性Schrodinger方程的精确孤子解.结果表明，通过调节轴向振荡与径向振荡的比值或馈电参数，可以将亮孤子压缩到一个假定的物质波密度峰值。特别是当参数满足λ = 2γ时，孤子随时间演化是稳定的，其形状和振幅基本不变。
The exact solitonic solutions of the one-dimensional nonlinear Schrodinger equation, which describes the dynamics of bright soliton in Bose–Einstein condensates with the time-dependent interaction in an expulsive parabolic and complex potential, are obtained by Darboux transformation. The results show that one can compress a bright soliton into an assumed peak of matter wave density by adusting the experimental parameter of the ratio of axial oscillation to radial oscillation or feeding parameter. Especially, when parameters satisfy the relation λ = 2γ, the soliton is stable with time evolution without changing its shape and amplitude.