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arXiv 1302.7277nlin.CD
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多时滞混沌网络的同步与标度特性

Synchronization and scaling properties of chaotic networks with multiple delays

Otti D'Huys, Steffen Zeeb, Thomas Jüngling, Serhiy Yanchuk, Wolfgang Kinzel

摘要:

我们研究的混沌系统的多个时间延迟的范围超过几个数量级。我们发现,在这样的系统的李雅普诺夫指数(LE)的频谱具有层次结构,与不同的部分标度不同的延迟。这导致不同类型的混乱,这取决于最大LE的缩放。我们的研究结果是相关的,特别是,分层网络(网络的网络)的同步特性,其中子网络的节点耦合较短的延迟和不同的子网络之间的耦合实现较长的延迟时间。如果最大指数与较短延迟成比例,则子网络内的单元可以同步,如果最大指数与长延迟成比例,则不同子网络之间的长范围同步才是可能的。伯努利映射和数值帐篷映射的结果进行了说明。

英文摘要:

We study chaotic systems with multiple time delays that range over several orders of magnitude. We show that the spectrum of Lyapunov exponents (LE) in such systems possesses a hierarchical structure, with different parts scaling with the different delays. This leads to different types of chaos, depending on the scaling of the maximal LE. Our results are relevant, in particular, for the synchronization properties of hierarchical networks (networks of networks) where the nodes of subnetworks are coupled with shorter delays and couplings between different subnetworks are realized with longer delay times. Units within a subnetwork can synchronize if the maximal exponent scales with the shorter delay, long range synchronization between different subnetworks is only possible if the maximal exponent scales with the long delay. The results are illustrated analytically for Bernoulli maps and numerically for tent maps.

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