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arXiv 1202.4823nlin.CD
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相位相干和非相干混沌的几何和动力学观点

Geometric and dynamic perspectives on phase-coherent and noncoherent chaos

Yong Zou, Reik V. Donner, Jürgen Kurths

摘要:

从时间序列中统计区分相相干和非相干混沌动力学是非线性科学中的一个当代问题。在这项工作中,我们提出了不同的措施的基础上记录的轨迹,从几何和动态的观点来描述底层系统的递归特性。讨论了区分相位相干和非相干混沌振荡的各种措施的潜力。对混沌Rössler系统进行了详细的数值分析,当一个控制参数变化时,该系统同时表现出两种混沌,并以Mackey-Glass系统为例,对具有非相干混沌的时滞系统进行了数值分析.我们的研究结果表明,特别是从递归网络分析的几何措施是非常适合跟踪螺旋型和螺旋型混沌之间的过渡,一个共同的路线从相位相干到非相干混沌也发现在其他非线性振荡器。所观察到的行为的吸引子的几何形状的详细解释。

英文摘要:

Statistically distinguishing between phase-coherent and noncoherent chaotic dynamics from time series is a contemporary problem in nonlinear sciences. In this work, we propose different measures based on recurrence properties of recorded trajectories, which characterize the underlying systems from both geometric and dynamic viewpoints. The potentials of the individual measures for discriminating phase-coherent and noncoherent chaotic oscillations are discussed. A detailed numerical analysis is performed for the chaotic Rössler system, which displays both types of chaos as one control parameter is varied, and the Mackey-Glass system as an example of a time-delay system with noncoherent chaos. Our results demonstrate that especially geometric measures from recurrence network analysis are well suited for tracing transitions between spiral- and screw-type chaos, a common route from phase-coherent to noncoherent chaos also found in other nonlinear oscillators. A detailed explanation of the observed behavior in terms of attractor geometry is given.

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