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arXiv 0903.4801math.AP
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关于Gross-Pitaevskii方程II的Korteweg-de Vries长波近似

On the Korteweg-de Vries long-wave approximation of the Gross-Pitaevskii equation II

Fabrice Bethuel, Philippe Gravejat, Jean-Claude Saut, Didier Smets

摘要:

在本文中,我们继续沿着我们的分析Korteweg-de Vries近似的Gross-Pitaevskii方程在以前的文件中启动。在长波极限下,我们建立了一维Gross-Pitaevskii方程的小振幅解分裂成两个具有相反恒定速度的波$\pm \sqrt{2}$,每个波都是Korteweg-de Vries方程的解。我们还计算误差项的估计,只要考虑行波,这是最佳的。以初始数据的更高规律性为代价,这改进了我们先前的估计。

英文摘要:

In this paper, we proceed along our analysis of the Korteweg-de Vries approximation of the Gross-Pitaevskii equation initiated in a previous paper. At the long-wave limit, we establish that solutions of small amplitude to the one-dimensional Gross-Pitaevskii equation split into two waves with opposite constant speeds $\pm \sqrt{2}$, each of which are solutions to a Korteweg-de Vries equation. We also compute an estimate of the error term which is somewhat optimal as long as travelling waves are considered. At the cost of higher regularity of the initial data, this improves our previous estimate.

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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