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arXiv 1709.09253math.APmath-phmath.MPnlin.SIquant-ph
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具有非局部非线性项的偏微分系统:产生与解

Partial differential systems with nonlocal nonlinearities: Generation and solutions

Margaret Beck, Anastasia Doikou, Simon J. A. Malham, Ioannis Stylianidis

摘要:

我们开发了一种方法来产生解决方案的大型类的演化偏微分系统的非局部非线性。对于任意的初始数据,从相应的线性化方程产生的解决方案。关键是一个弗雷德霍姆积分方程有关的线性化流的辅助线性流。它类似于可积系统中的Marchenko积分方程。我们明确地表明,这是如何通过几个例子,包括反应扩散系统的非局部二次非线性和非局部三次非线性的非线性薛定谔方程。在每种情况下,我们证明我们的方法与数值模拟。我们讨论了我们的方法的有效性以及如何扩展。

英文摘要:

We develop a method for generating solutions to large classes of evolutionary partial differential systems with nonlocal nonlinearities. For arbitrary initial data, the solutions are generated from the corresponding linearized equations. The key is a Fredholm integral equation relating the linearized flow to an auxiliary linear flow. It is analogous to the Marchenko integral equation in integrable systems. We show explicitly how this can be achieved through several examples including reaction-diffusion systems with nonlocal quadratic nonlinearities and the nonlinear Schrodinger equation with a nonlocal cubic nonlinearity. In each case we demonstrate our approach with numerical simulations. We discuss the effectiveness of our approach and how it might be extended.

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