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arXiv 2211.03124math.AP
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关于非线性薛定谔方程的衰减性质

On decaying properties of nonlinear Schrödinger equations

Chenjie Fan, Gigliola Staffilani, Zehua Zhao

摘要:

本文讨论了三维立方散焦非线性薛定谔方程解的定量(逐点)衰减估计。我们发现,非线性解决方案享有相同的衰减率的线性。对初始数据的正则性假设比以前的结果(见\cite{fan2021decay}和其中的参考文献)低得多,而且我们量化了衰减,这是这项工作的另一个新颖之处。此外,我们表明,初始数据的(物理)随机化可以用来取代$L^1$ -数据假设(见\cite{fan2022note}的必要性$L^1$ -数据假设)。最后,我们注意到这种方法也可以应用于其他非线性色散方程的衰减估计。

英文摘要:

In this paper we discuss quantitative (pointwise) decay estimates for solutions to the 3D cubic defocusing Nonlinear Schrödinger equation with various initial data, deterministic and random. We show that nonlinear solutions enjoy the same decay rate as the linear ones. The regularity assumption on the initial data is much lower than in previous results (see \cite{fan2021decay} and the references therein) and moreover we quantify the decay, which is another novelty of this work. Furthermore, we show that the (physical) randomization of the initial data can be used to replace the $L^1$-data assumption (see \cite{fan2022note} for the necessity of the $L^1$-data assumption). At last, we note that this method can be also applied to derive decay estimates for other nonlinear dispersive equations.

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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