Soliton propagation in a Bose-Einstein condensate

被引：17

作者：

Tsurumi, T ^{[1
]}

Wadati, M ^{[1
]}

机构：

[1] Univ Tokyo, Grad Sch Sci, Dept Phys, Tokyo 1130033, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1998年 / 67卷 / 07期

关键词：

Bose-Einstein condensation; highly asymmetric trap; reductive perturbation method; Korteweg-de Vries equation; soliton;

D O I：

10.1143/JPSJ.67.2294

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the propagation of nonlinear pulses in a magnetically trapped Bose-Einstein condensate. The condensate may take an elongated shape just like a "cigar": because of high asymmetry of the harmonic trap. By applying the reductive perturbation method to model equations, we derive the Korteweg-de Vries equation, and show a formula for the dependence of the pulse speed on its amplitude.

引用

页码：2294 / 2299

页数：6

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