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arXiv 1612.04524math.AP
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临界齐次非线性薛定谔方程的长程散射

Long range scattering for nonlinear Schrödinger equations with critical homogeneous nonlinearity

Satoshi Masaki, Hayato Miyazaki

摘要:

本文考虑一维和二维空间中具有长程临界阶齐次非线性项的非线性薛定谔方程的终态问题。由于非线性是临界阶,可能的渐近行为取决于非线性的形状。本文的目的是给出构造修正波算子的非线性充分条件。为了处理非多项式非线性,我们通过傅里叶级数展开将其分解为共振部分和非共振部分。我们的充分条件,然后给出的傅里叶系数。特别地,我们需要注意傅里叶系数的衰减,因为非共振部分通常是无限和。

英文摘要:

In this paper, we consider the final state problem for the nonlinear Schrödinger equation with a homogeneous nonlinearity which is of the long range critical order and is not necessarily a polynomial, in one and two space dimensions. As the nonlinearity is the critical order, the possible asymptotic behavior depends on the shape of the nonlinearity. The aim here is to give a sufficient condition on the nonlinearity to construct a modified wave operator. To deal with a non-polynomial nonlinearity, we decompose it into a resonant part and a non-resonant part via the Fourier series expansion. Our sufficient condition is then given in terms of the Fourier coefficients. In particular, we need to pay attention to the decay of the Fourier coefficients since the non-resonant part is an infinite sum in general.

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