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arXiv 1011.6003nlin.CD
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耦合分段线性混沌映射不稳定维数变化的参数演化

Parametric evolution of unstable dimension variability in coupled piecewise-linear chaotic maps

Rodrigo Frehse Pereira, Marcos C. Verges, Ricardo L. Viana, Sergio R. Lopes, Sandro Ely de Souza Pinto

摘要:

在不稳定的维数变化的存在下,混沌系统的数值解仅在短时间内有效。出于这个原因,需要表现出这种现象的系统的分析结果。为了进一步得到这样的结果,我们研究了两个耦合平房映射中不稳定维数变化的参数演化。这些映射中的每一个都呈现了定义马尔可夫分区的线性区间,在同步的情况下,这些线性区间被恢复为耦合系统。使用这样的分区,我们找到确切的结果发病不稳定的尺寸变化和对比度的措施,量化的强度的现象嵌入在同步子空间中的周期轨道的稳定性。

英文摘要:

In presence of unstable dimension variability numerical solutions of chaotic systems are valid only for short periods of observation. For this reason, analytical results for systems that exhibit this phenomenon are needed. Aiming to go one step further in obtaining such results, we study the parametric evolution of unstable dimension variability in two coupled bungalow maps. Each of these maps presents intervals of linearity that define Markov partitions, which are recovered for the coupled system in the case of synchronization. Using such partitions we find exact results for the onset of unstable dimension variability and for contrast measure, which quantifies the intensity of the phenomenon in terms of the stability of the periodic orbits embedded in the synchronization subspace.

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