| Dark soliton in one-dimensional Bose–Einstein condensate under a periodic perturbation of trap |
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| 引用本文： | 刘超飞,胡柯,胡涛,唐翌.Dark soliton in one-dimensional Bose–Einstein condensate under a periodic perturbation of trap[J].中国物理 B,2011,20(1):10309-010309. |
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| 作者姓名： | 刘超飞 胡柯 胡涛 唐翌 |
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| 基金项目： | Project supported by the General Project of Hunan Provincial Educational Department of China (Grant No. 07C754), and the National Natural Science Foundation of China (Grant No. 30570432). |
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| 摘 要： |
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| 关 键 词： | 玻色爱因斯坦凝聚 周期扰动 暗孤子 陷阱 一维 频率变化 孤子传输 移动方向 |
| 收稿时间： | 3/7/2010 12:00:00 AM |
Dark soliton in one-dimensional Bose–Einstein condensate under a periodic perturbation of trap |
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| Liu Chao-Fei,Hu Ke,Hu Tao and Tang Yi.Dark soliton in one-dimensional Bose–Einstein condensate under a periodic perturbation of trap[J].Chinese Physics B,2011,20(1):10309-010309. |
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| Authors: | Liu Chao-Fei Hu Ke Hu Tao and Tang Yi |
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| Institution: | Department of Physics, Xiangtan University, Xiangtan 411105, China;Department of Physics, Xiangtan University, Xiangtan 411105, China;Department of Physics, Xiangtan University, Xiangtan 411105, China;Department of Physics, Xiangtan University, Xiangtan 411105, China |
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| Abstract: | The perturbation of a confining trap leads to the collective oscillation of a Bose--Einstein condensate, thereby the propagation of a dark soliton in the condensate is affected. In this study, periodic perturbation is employed to match the soliton oscillation. We find that the soliton dynamics depends sensitively on the coupling between the moving direction of the trap and that of the soliton. The soliton energy/depth evolves periodically, and a relevant shift in the soliton trajectory occurs as compared with the unperturbed case. Overall, the soliton oscillation frequency changes little even if the perturbation amplitude and frequency vary. |
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| Keywords: | Bose--Einstein condensate dark soliton |
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