Nonlinear resonance phenomenon of one-dimensional Bose-Einstein condensate under periodic modulation

被引：3

作者：

Hua Wei ^{[1
]}

Liu Shi-Xing ^{[2
]}

机构：

[1] Shenyang Normal Univ, Coll Phys & Technol, Shenyang 110034, Peoples R China

[2] Liaoning Univ, Coll Phys, Shenyang 110036, Peoples R China

来源：

CHINESE PHYSICS B | 2014年 / 23卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Bose-Einstein condensate; resonance; periodic modulation; symplectic method; SCATTERING LENGTH; INTERFERENCE; DYNAMICS;

D O I：

10.1088/1674-1056/23/2/020309

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the effect of an external periodic modulation on the one-dimensional (1D) Bose-Einstein condensate with harmonic trapping potential. By numerically solving the Gross-Pitaevskii equation with symplectic algorithm, the nonlinear resonance phenomenon is shown and the corresponding Fourier spectrum is given. The autoresonance phenomenon is also presented under almost periodic external modulation, and it shows that the condensate eventually evolves into quasi-periodic oscillation.

引用

页数：5

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