Controlling the amplitude of soliton in a growing Bose-Einstein condensate by means of Fes

Controlling the amplitude of soliton in a growing Bose-Einstein condensate by means of Feshbach

resonance

He Zhang-Ming;Wang Deng-Long;Zhang Wei-Xi;Wang Feng-Jiao;Ding Jian-Wen

【期刊名称】《中国物理：英文版》 【年(卷),期】2008(017)010

【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 Ω＜0(Ω＞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 fluture experiment. 【总页数】4页(3640-3643)

【关键词】Feshbach resonance;Bose-Einstein condensate;bright soliton 【作者】He Zhang-Ming;Wang Deng-Long;Zhang Wei-Xi;Wang Feng-Jiao;Ding Jian-Wen

【作者单位】Department of Physics and Key Laboratory of Low