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arXiv 1006.0189nlin.CDnlin.PS
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时空混沌吸引子的反常标度

Anomalous Scaling on a Spatiotemporally Chaotic Attractor

Ralf W. Wittenberg, Ka-Fai Poon

摘要:

具有连续对称性的斑图形成的Nikolaevskiy模型表现出强尺度分离的时空混沌。对混沌吸引子的广泛数值研究揭示了长波模的意外标度行为。令人惊讶的是,计算出的幅度和相关时间缩放被发现从渐近一致的多尺度分析获得的值不同。然而,当高阶修正被添加到马修斯和考克斯的领导阶理论,异常标度恢复。

英文摘要:

The Nikolaevskiy model for pattern formation with continuous symmetry exhibits spatiotemporal chaos with strong scale separation. Extensive numerical investigations of the chaotic attractor reveal unexpected scaling behavior of the long-wave modes. Surprisingly, the computed amplitude and correlation time scalings are found to differ from the values obtained by asymptotically consistent multiple-scale analysis. However, when higher-order corrections are added to the leading-order theory of Matthews and Cox, the anomalous scaling is recovered.

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