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arXiv 1611.04771math.AP
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周期行波轨道稳定性的充分条件

Sufficient Conditions for Orbital Stability of Periodic Traveling Waves

Giovana Alves, Fábio Natali, Ademir Pastor

摘要:

本文研究了一类支持非线性色散波的发展方程的周期波轨道稳定性的充分条件。我们的方法可以看作是最近在\cite{st}中发展起来的孤波理论在空间周期波上的推广。首先,我们的主要结果不依赖于周期波本身的参数化。其次,在已知的孤波轨道稳定性判据的基础上,我们证明了同样的判据对周期波也成立。此外,我们还证明了与“能量面函数”相关的黑塞矩阵的主元素的正性也足以获得稳定性。由此,我们可以建立几种非线性色散模型的周期波的轨道稳定性。我们相信我们的方法可以应用于广泛的一类发展方程,特别是它可以扩展到正则色散波方程。

英文摘要:

The present paper deals with sufficient conditions for orbital stability of periodic waves of a general class of evolution equations supporting nonlinear dispersive waves. Our method can be seen as an extension to spatially periodic waves of the theory of solitary waves recently developed in \cite{st}. Firstly, our main result do not depend on the parametrization of the periodic wave itself. Secondly, motived by the well known orbital stability criterion for solitary waves, we show that the same criterion holds for periodic waves. In addition, we show that the positiveness of the principal entries of the Hessian matrix related to the "energy surface function" are also sufficient to obtain the stability. Consequently, we can establish the orbital stability of periodic waves for several nonlinear dispersive models. We believe our method can be applied in a wide class of evolution equations; in particular it can be extended to regularized dispersive wave 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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