arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.04728nlin.SI
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圆上可积发展方程的一种新方法

A new approach to integrable evolution equations on the circle

A. S. Fokas, J. Lenells

摘要:

基于统一变换,提出了一种求解周期环境下可积发展方程初值问题的新方法。使用非线性薛定谔方程作为一个模型的例子,我们表明,在圆上的初始值问题的解决方案,可以表示为一个黎曼-希尔伯特问题的解决方案,其制定涉及的数量是定义在初始数据单独。我们的方法提供了一个有效的解决方案的问题上的圆圈,这是概念上类似的解决方案的问题上的线通过逆散射变换。

英文摘要:

We propose a new approach for the solution of initial value problems for integrable evolution equations in the periodic setting based on the unified transform. Using the nonlinear Schrödinger equation as a model example, we show that the solution of the initial value problem on the circle can be expressed in terms of the solution of a Riemann-Hilbert problem whose formulation involves quantities which are defined in terms of the initial data alone. Our approach provides an effective solution of the problem on the circle which is conceptually analogous to the solution of the problem on the line via the inverse scattering transform.

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