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arXiv 1902.01245nlin.PS
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图形形成系统中的波数选择

Wavenumber Selection in Pattern Forming Systems

S. Saxena, J. M. Kosterlitz

摘要:

斑图形成系统中的波数选择一直是物理学中的一个难题。以往的研究表明,外部噪声是波数选择的一种可能机制。我们进行了广泛的数值研究的噪声稳定Kuramoto Sivashinsky方程。我们使用一个快速的光谱方法的整合,这使我们能够调查长时间的行为,大系统的尺寸,不能调查早期的工作。我们发现,具有唯一波数的状态在很长一段时间内发生的可能性最高。我们还发现,这种状态是独立的强度的噪声和初始条件,从而使一个令人信服的情况下,噪声的作用作为一种机制的状态选择。

英文摘要:

Wavenumber selection in pattern forming systems remains a long standing puzzle in physics. Previous studies have shown that external noise is a possible mechanism for wavenumber selection. We conduct an extensive numerical study of the noisy stabilized Kuramoto Sivashinsky equation. We use a fast spectral method of integration, which enables us to investigate long time behavior for large system sizes that could not be investigated by earlier work. We find that a state with a unique wavenumber has the highest probability of occurring at very long times. We also find that this state is independent of the strength of the noise and initial conditions, thus making a convincing case for the role of noise as a mechanism of state selection.

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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