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arXiv 0902.4269nlin.CD
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一个人能把混沌映射的状态空间分解到什么程度?

How well can one resolve the state space of a chaotic map?

Domenico Lippolis, Predrag Cvitanovic

摘要:

所有物理系统都受到一些噪声的影响,这些噪声限制了在划分其状态空间时可以达到的分辨率。对于混沌,局部双曲流,这种分辨率取决于局部拉伸/收缩和由于噪声的涂抹的相互作用。我们建议确定一个给定的双曲动力系统和一个给定的弱加性白噪声的“最好的可达到的”分区,通过计算的局部特征函数的伴随福克-普朗克算子沿每个周期点,并使用重叠的宽度作为最佳分区的标准。福克-普朗克演化则表示为一个有限的过渡图,其谱行列式产生的时间平均的动态观测。这种“最佳分区”的一维排斥支持我们的假设的数值测试。

英文摘要:

All physical systems are affected by some noise that limits the resolution that can be attained in partitioning their state space. For chaotic, locally hyperbolic flows, this resolution depends on the interplay of the local stretching/contraction and the smearing due to noise. We propose to determine the `finest attainable' partition for a given hyperbolic dynamical system and a given weak additive white noise, by computing the local eigenfunctions of the adjoint Fokker-Planck operator along each periodic point, and using overlaps of their widths as the criterion for an optimal partition. The Fokker-Planck evolution is then represented by a finite transition graph, whose spectral determinant yields time averages of dynamical observables. Numerical tests of such `optimal partition' of a one-dimensional repeller support our hypothesis.

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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