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arXiv 1303.3532math-phmath.APmath.MP
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$\R^2$中KP-II方程的线孤子稳定性

Stability of line solitons for the KP-II equation in $\R^2$

Tetsu Mizumachi

摘要:

我们证明了KP-II方程的线孤子解关于指数局域化为$x\to\infty$的横向扰动的非线性稳定性。我们发现,线孤子的振幅收敛到初始时刻的线孤子的振幅,而峰值的局部相移的跳跃以有限的速度向$y=\pm\infty$传播。线孤子的局部振幅和峰值相移由一个含衍射项的一维波动方程组描述。

英文摘要:

We prove nonlinear stability of line soliton solutions of the KP-II equation with respect to transverse perturbations that are exponentially localized as $x\to\infty$. We find that the amplitude of the line soliton converges to that of the line soliton at initial time whereas jumps of the local phase shift of the crest propagate in a finite speed toward $y=\pm\infty$. The local amplitude and the phase shift of the crest of the line solitons are described by a system of 1D wave equations with diffraction terms.

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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