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arXiv 1609.04712math.AP
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关于调制空间$M_{p,q}(\mathbb R)$中一维三次NLS初值问题整体解的存在性

On existence of global solutions of the one-dimensional cubic NLS for initial data in the modulation space $M_{p,q}(\mathbb R)$

Leonid Chaichenets, Dirk Hundertmark, Peer Kunstmann, Nikolaos Pattakos

摘要:

证明了调制空间$M_{p,p'}$中一维立方非线性薛定谔方程的整体存在性,其中$p$充分接近$2$ .与已知结果相比,我们的结果不需要初始数据的小性条件。该证明采用了一种分裂方法,该方法受到Vargas-Vega和Hyakuna-Tsutsumi工作的启发,适用于调制空间设置,并利用调制空间上自由薛定谔群的多项式增长。

英文摘要:

We prove global existence for the one-dimensional cubic non-linear Schrödinger equation in modulation spaces $M_{p,p'}$ for $p$ sufficiently close to $2$. In contrast to known results, our result requires no smallness condition on initial data. The proof adapts a splitting method inspired by work of Vargas-Vega and Hyakuna-Tsutsumi to the modulation space setting and exploits polynomial growth of the free Schrödinger group on modulation spaces.

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