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arXiv 1807.02302math.AP
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修正Korteweg-de Vries方程自相似解的Fourier空间渐近性

Asymptotics in Fourier space of self-similar solutions to the modified Korteweg-de Vries equation

Simão Correia, Raphaël Côte, Luis Vega

摘要:

通过加权W^{1,\infty }中的一个不动点参数,我们给出了修正Korteweg-de Vries方程自相似解的傅里叶变换的渐近性.这种知识是至关重要的,在研究的自相似解决方案的修改Korteweg-de Vries流的稳定性。在散焦情况下,自相似轮廓是Painlevé II方程的解。尽管它们在物理空间中得到了广泛的研究,但据我们所知,没有结果描述它们在傅里叶空间中的行为。我们能够将傅立叶空间中的描述所涉及的常数与物理空间中的描述所涉及的常数联系起来。

英文摘要:

We give the asymptotics of the Fourier transform of self-similar solutions to the modified Korteweg-de Vries equation, through a fixed point argument in weighted W^{1,\infty} around a carefully chosen, two term ansatz. Such knowledge is crucial in the study of stability properties of the self-similar solutions for the modified Korteweg-de Vries flow. In the defocusing case, the self-similar profiles are solutions to the Painlevé II equation. Although they were extensively studied in physical space, no result to our knowledge describe their behavior in Fourier space. We are able to relate the constants involved in the description in Fourier space with those involved in the description in physical space.

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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