中国物理B ›› 2008, Vol. 17 ›› Issue (10): 3640-3643.doi: 10.1088/1674-1056/17/10/018
何章明, 王登龙, 张蔚曦, 王凤姣, 丁建文
He Zhang-Ming(何章明), Wang Deng-Long(王登龙)†, Zhang Wei-Xi(张蔚曦), Wang Feng-Jiao(王凤姣), and Ding Jian-Wen(丁建文)
摘要: By using Darboux transformation, this paper studies analytically the nonlinear dynamics of a one-dimensional growing Bose--Einstein condensate (BEC). It is shown that the growing model has an important effect on the amplitude of the soliton in the condensates. In the absence of the growing model, there exhibits the stable alternate bright solitons in the condensates. In the presence of the growing model, the obtained results show that the amplitude of the bright soliton decreases (increases) for the BEC growing coefficient $\Om<0$ $(\Om >0)$. Furthermore, we propose experimental protocols to manipulate the amplitude of the bright soliton by varying the scattering length via the Feshbach resonance in the future experiment.
中图分类号: (Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)