Spatiotemporal dynamics of Bose-Einstein condensates in moving optical lattices

被引：22

作者：

Li, F. ^{[1
]}

Shu, W. X. ^{[1
]}

Jiang, J. G. ^{[1
]}

Luo, H. L. ^{[1
]}

Ren, Z. ^{[1
]}

机构：

[1] Nanjing Univ, Dept Phys, Nanjing 210008, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL D | 2007年 / 41卷 / 02期

关键词：

D O I：

10.1140/epjd/e2006-00247-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Spatiotemporal dynamics of Bose-Einstein condensates in moving optical lattices have been studied. For a weak lattice potential, the perturbed correction to the heteroclinic orbit in a repulsive system is constructed. We find the boundedness conditions of the perturbed correction contain the Melnikov chaotic criterion predicting the onset of Smale-horseshoe chaos. The effect of the chemical potential on the spatiotemporal dynamics is numerically investigated. It is revealed that the variance of the chemical potential can lead the systems into chaos. Regulating the intensity of the lattice potential can efficiently suppress the chaos resulting from the variance of the chemical potential. And then the effect of the phenomenological dissipation is considered. Numerical calculation reveals that the chaos in the dissipative system can be suppressed by adjusting the chemical potential and the intensity of the lattice potential.

引用

页码：355 / 361

页数：7

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