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arXiv 1012.3762cond-mat.quant-gas
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物质波孤子分子的形成

Formation of matter-wave soliton molecules

U. Al Khawaja, H. T. C. Stoof

摘要:

我们提出了一种由Dris { \it et al.}最近的实验所启发的形成物质波孤子分子的方法。在建议的设置中,我们表明,如果两个孤子最初准备在相位和足够小的分离和相对速度,一个绑定对将始终形成。这是验证直接数值模拟的Gross-Pitaevskii方程和两个孤子的精确相互作用能的推导,它采取的形式的Morse潜在的。这种相互作用势不仅取决于分离,而且还取决于孤子的相对相位,并且对于许多其他问题的分析处理是必不可少的,例如孤子气体和Toda孤子晶格。

英文摘要:

We propose a method of forming matter-wave soliton molecules that is inspired by the recent experiment of Dris {\it et al.}. In the proposed set-up we show that if two solitons are initially prepared in phase and with a sufficiently small separation and relative velocity, a bound pair will always form. This is verified by direct numerical simulation of the Gross-Pitaevskii equation and by the derivation of the exact interaction energy of two solitons, which takes the form of a Morse potential. This interaction potential depends not only on the separation but also on the relative phase of the solitons and is essential for an analytical treatment of a host of other problems, such as the soliton gas and the Toda lattice of solitons.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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