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arXiv 1301.4481nlin.CD
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完美混沌系统中的聚类与不确定性

Clustering and Uncertainty in Perfect Chaos Systems

Sergey A. Kamenshchikov

摘要:

本研究的目的是严格推导出混沌系统的新性质及其相互关系。导出了具有非定常扩散的广义Fokker-Planck方程,并将其用于混沌分析。反常输运被证明是这个方程的自然属性。所考虑的运动的非线性分散允许找到一个主要的后果:具有均匀的动态特性的混沌系统往往不稳定的聚类。即使初始输运性质是均匀分布的,粒子密度的微小波动也会随着时间的推移而增加,并形成吸引子和随机岛。结果表明,相轨迹的不稳定性导致非线性色散律,从而导致空间不稳定性。使用标准福克-普朗克方程考虑固定边界系统。我们导出了这类动力系统具有离散的扩散谱和能谱。结果表明,在这种情况下,相空间扩散是定义动态精度的唯一参数。在考虑输运性质的情况下,得到了共轭相空间变量的测不准关系。所得结果可用于混沌系统建模和湍流研究。

英文摘要:

The goal of this investigation was to derive strictly new properties of chaotic systems and their mutual relations. The generalized Fokker-Planck equation with a non stationary diffusion has been derived and used for chaos analysis. An anomalous transport turned out to be natural property of this equation. A nonlinear dispersion of the considered motion allowed to find a principal consequence: a chaotic system with uniform dynamic properties tends to unstable clustering. Small fluctuations of particles density increase by time and form attractors and stochastic islands even if the initial transport properties have uniform distribution. It was shown that an instability of phase trajectories leads to the nonlinear dispersion law and consequently to a space instability. A fixed boundary system was considered, using a standard Fokker-Planck equation. We have derived that such a type of dynamic systems has a discrete diffusive and energy spectra. It was shown that phase space diffusion is the only parameter that defines a dynamic accuracy in this case. The uncertainty relations have been obtained for conjugate phase space variables with account of transport properties. Given results can be used in the area of chaotic systems modelling and turbulence investigation.

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