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arXiv 1604.03024math.AP
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Ostrovsky模型和短脉冲模型经典周期波的谱稳定性

Spectral stability for classical periodic waves of the Ostrovsky and short pulse models

Sevdzhan Hakkaev, Milena Stanislavova, Atanas Stefanov

摘要:

我们考虑对称空间间隔中的Ostrovsky模型和短脉冲模型,受周期边界条件的约束。对于Ostrovsky情形,我们重新讨论了经典的周期行波,对于短脉冲模型,我们明确地用雅可比椭圆函数构造了行波。对于这两个例子,我们显示的频谱稳定性,所有的参数值。这是通过研究$L u=\la u'$形式的非标准本征值问题来实现的,其中$L$是Hill算子。

英文摘要:

We consider the Ostrovsky and short pulse models in a symmetric spatial interval, subject to periodic boundary conditions. For the Ostrovsky case, we revisit the classical periodic traveling waves and for the short pulse model, we explicitly construct traveling waves in terms of Jacobi elliptic functions. For both examples, we show spectral stability, for all values of the parameters. This is achieved by studying the non-standard eigenvalue problems in the form $L u=\la u'$, where $L$ is a Hill operator.

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