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arXiv 1003.2916nlin.AOnlin.PS
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网络拓扑变化的三振子网络中的嵌合体

Chimeras in a Network of Three Oscillator Populations with Varying Network Topology

Erik Andreas Martens

摘要:

我们研究一个网络的三个人口的耦合相位振荡器具有相同的频率。种群之间的相互作用是非局部的,也就是说所有的振子都是相互耦合的,但与相邻种群中的振子的耦合要比与自己种群中的振子的耦合弱。以该系统为模型系统,首次讨论了网络拓扑结构对所谓嵌合态存在性的影响。在这种情况下,具有三个种群的网络代表了一个有趣的情况,因为种群可以连接为三角形或链,从而代表振荡器种群的环或线段的最简单离散网络。我们引入了一个特殊的参数,使我们能够研究打破三角形网络结构的影响,并不断改变网络的对称性,使其变得越来越像链。通过证明嵌合状态只存在于一组有界的参数值,我们证明了它们的存在强烈依赖于底层的网络结构。我们的结论是,嵌合体存在于具有链式特征的网络上,这表明在振子的连续线段上观察到嵌合体是可能的。

英文摘要:

We study a network of three populations of coupled phase oscillators with identical frequencies. The populations interact nonlocally, in the sense that all oscillators are coupled to one another, but more weakly to those in neighboring populations than to those in their own population. Using this system as a model system, we discuss for the first time the influence of network topology on the existence of so called chimera states. In this context, the network with three populations represents an interesting case because the populations may either be connected as a triangle, or as a chain, thereby representing the simplest discrete network of either a ring or a line segment of oscillator populations. We introduce a special parameter that allows us to study the effect of breaking the triangular network structure, and to vary the network symmetry continuously such that it becomes more and more chain-like. By showing that chimera states only exist for a bounded set of parameter values we demonstrate that their existence depends strongly on the underlying network structures. We conclude that chimeras exist on networks with a chain-like character, which indicates that it might be possible to observe chimeras on a continuous line segment of oscillators.

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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