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arXiv 0907.1386nlin.PS
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高维Ablowitz-Ladik模型:从(非)可积性和孤立波到令人惊讶的崩溃性质和更多的奇异解

The higher-dimensional Ablowitz-Ladik model: from (non-)integrability and solitary waves to surprising collapse properties and more exotic solutions

P. G. Kevrekidis, G. J. Herring, S. Lafortune, Q. E. Hoq

摘要:

我们提出了一个考虑的二维Ablowitz-Ladik离散的无处不在的非线性薛定谔(NLS)模型的属性。我们使用奇点限制技术,建议相关的离散化不应该是可积的。更重要的是,我们确定了原型孤立波的模型,并检查其稳定性,说明显着的功能,附近的连续极限,这种离散化导致崩溃和完整的谱波稳定性的情况下,形成鲜明对比的标准离散化的NLS。我们还简要地触及了三维的情况下,我们的考虑在其中的推广,也提出了一些更奇特的解决方案的模型,如精确的线孤子和离散涡。

英文摘要:

We propose a consideration of the properties of the two-dimensional Ablowitz-Ladik discretization of the ubiquitous nonlinear Schrodinger (NLS) model. We use singularity confinement techniques to suggest that the relevant discretization should not be integrable. More importantly, we identify the prototypical solitary waves of the model and examine their stability, illustrating the remarkable feature that near the continuum limit, this discretization leads to the absence of collapse and complete spectral wave stability, in stark contrast to the standard discretization of the NLS. We also briefly touch upon the three-dimensional case and generalizations of our considerations therein, and also present some more exotic solutions of the model, such as exact line solitons and discrete vortices.

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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