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arXiv 0801.2678math.AP
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$ϕ^4$模型三维扭结的渐近稳定性

On asymptotic stability in 3D of kinks for the $ϕ^4$ model

Scipio Cuccagna

摘要:

我们给一个扭结,一个一维结构,加上两个横向方向。然后,我们检查它的渐近稳定性关于紧支撑扰动在三维和时间发展下的非线性波动方程(NLW)。这个问题的灵感来自于Jack Xin关于反应扩散方程在维数大于1的前沿的渐近稳定性的工作。这个证明涉及变量的分离。横向变量被视为在工作中的非线性克莱因戈登方程(NLKG)起源于Klainerman和Shatah在一个特定的阐述由于Delort和其他人。利用Weder关于一维薛定谔算子色散的一个结果来处理纵向变量。

英文摘要:

We add to a kink, which is a 1 dimensional structure, two transversal directions. We then check its asymptotic stability with respect to compactly supported perturbations in 3D and a time evolution under a Nonlinear Wave Equation (NLW). The problem is inspired by work by Jack Xin on asymptotic stability in dimension larger than 1 of fronts for reaction diffusion equations. The proof involves a separation of variables. The transversal variables are treated as in work on Nonlinear Klein Gordon Equation (NLKG) originating from Klainerman and from Shatah in a particular elaboration due to Delort and others. The longitudinal variable is treated by means of a result by Weder on dispersion for Schroedinger operators in 1D.

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