Evolutions of matter-wave bright soliton with spatially modulated nonlinearity

被引：0
|
作者：
Cheng, Yongshan [1 ,2 ]
Liu, Fei [2 ]
机构：
[1] Univ Estadual Paulista, Inst Fis Teor, BR-01405900 Sao Paulo, Brazil
[2] Hubei Normal Univ, Dept Phys, Huangshi 435002, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2009年 / 7卷 / 09期
基金：
巴西圣保罗研究基金会;
关键词：
BOSE-EINSTEIN CONDENSATE; DYNAMICS; GASES;
D O I：
10.3788/COL20090709.0834
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The evolution characteristics of a matter-wave bright soliton are investigated by means of the variational approach in the presence of spatially varying nonlinearity. It. is found that, the atom density envelope of the soliton is changed as a result of the spatial variation of the s-wave scattering length. The stable soliton can exist in appropriate initial conditions. The movement of the soliton depends on the sign and value of the coefficient of spatially modulated nonlinearity. These theoretical predictions are confirmed by the full numerical simulations of the one-dimensional Gross-Pitaevskii equation.
引用
收藏
页码：834 / 837
页数：4
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