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arXiv 1101.5340nlin.CD
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耦合系统振幅衰减的一般机理

General mechanism for amplitude death in coupled systems

V. Resmi, G. Ambika, R. E. Amritkar

摘要:

我们介绍了一个一般机制的振幅死亡耦合同步动力系统。众所周知,当两个系统直接耦合时,它们可以在适当的条件下同步。当通过环境或外部系统的间接反馈耦合被引入到它们中时,发现诱导反同步的趋势。我们表明,对于足够的强度,这两个竞争的影响可能导致振幅死亡。我们提供了一个一般的稳定性分析,给出了振幅死亡的阈值。我们详细研究了在几个特定情况下的过渡到死亡的性质,并发现过渡可以是两种类型-连续和不连续。通过选择各种动力学,例如,周期性的,混沌的,超混沌的,和时间延迟系统,我们说明了这种机制是相当普遍的,适用于不同类型的直接耦合,如扩散,置换,突触耦合和不同阻尼的动态环境。

英文摘要:

We introduce a general mechanism for amplitude death in coupled synchronizable dynamical systems. It is known that when two systems are coupled directly, they can synchronize under suitable conditions. When an indirect feedback coupling through an environment or an external system is introduced in them, it is found to induce a tendency for anti-synchronization. We show that, for sufficient strengths, these two competing effects can lead to amplitude death. We provide a general stability analysis that gives the threshold values for onset of amplitude death. We study in detail the nature of the transition to death in several specific cases and find that the transitions can be of two types - continuous and discontinuous. By choosing a variety of dynamics for example, periodic, chaotic, hyper chaotic, and time-delay systems, we illustrate that this mechanism is quite general and works for different types of direct coupling, such as diffusive, replacement, and synaptic couplings and for different damped dynamics of the environment.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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