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arXiv 2202.11665nlin.CD
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延迟系统中的混沌扩散:时滞调制的巨大增强

Chaotic Diffusion in Delay Systems: Giant Enhancement by Time Lag Modulation

Tony Albers, David Müller-Bender, Lukas Hille, Günter Radons

摘要:

我们考虑一类典型的时滞非线性系统,我们表现出混沌扩散。它表明,一个周期性的调制的时间滞后可以导致几个数量级的扩散常数的增强。如果由调制定义的圆图显示锁模,更具体地说,满足层流混沌的条件,则这种效应是最大的。因此,我们建立了第一次之间的连接阿诺德舌结构的参数空间和扩散性能的延迟系统。与直觉相反,扩散的增强伴随着系统有效维数的大幅降低。

英文摘要:

We consider a typical class of systems with delayed nonlinearity, which we show to exhibit chaotic diffusion. It is demonstrated that a periodic modulation of the time-lag can lead to an enhancement of the diffusion constant by several orders of magnitude. This effect is the largest if the circle map defined by the modulation shows mode locking and more specifically, fulfills the conditions for laminar chaos. Thus we establish for the first time a connection between Arnold tongue structures in parameter space and diffusive properties of a delay system. Counterintuitively, the enhancement of diffusion is accompanied by a strong reduction of the effective dimensionality of the system.

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