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arXiv 1503.09143math.AP
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mKdV孤立子的渐近稳定性

Asymptotic stability of solitons for mKdV

Pierre Germain, Fabio Pusateri, Frédéric Rousset

摘要:

我们证明了mKdV方程的孤波解的完全渐近稳定性结果。我们认为小扰动的孤波与多项式衰减在无穷远,并证明解决方案的柯西问题的发展,从这样的数据趋于一致,在实数线上,另一个孤波作为时间到无穷远。我们精确地描述了孤波背后的扰动的渐近性,表明它满足非线性修改的散射行为。这后一部分,我们的结果依赖于一个精确的研究小解的mKdV方程的渐近行为。

英文摘要:

We prove a full asymptotic stability result for solitary wave solutions of the mKdV equation. We consider small perturbations of solitary waves with polynomial decay at infinity and prove that solutions of the Cauchy problem evolving from such data tend uniformly, on the real line, to another solitary wave as time goes to infinity. We describe precisely the asymptotics of the perturbation behind the solitary wave showing that it satisfies a nonlinearly modified scattering behavior. This latter part of our result relies on a precise study of the asymptotic behavior of small solutions of the mKdV equation.

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