Chimera States: The Existence Criteria Revisited
Chimera States: The Existence Criteria Revisited
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DOI：
10.1103/physrevlett.112.144101
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发表时间：
2014-04-08
影响因子：
8.6
通讯作者：
Sen, Abhijit
中科院分区：
文献类型：
--
作者：
Sethia, Gautam C.;Sen, Abhijit
嵌合态，代表了一个人口的相同的振子，是相同的耦合，自发分裂成子群体显示同步和去同步化的行为，传统上被发现存在于弱耦合系统和振子之间的某种形式的非本地耦合。在这里，我们表明，无论是弱耦合近似，也不是非局部耦合的存在的必要条件。我们得到，第一次，振幅介导的嵌合态在全球耦合复杂的金斯堡-朗道振子系统。我们通过简化模型方程的分叉分析描绘了此类状态形成的动力学起源，并讨论了我们发现这类更广泛的嵌合体状态的实际意义。
Chimera states, representing a spontaneous breakup of a population of identical oscillators that are identically coupled, into subpopulations displaying synchronized and desynchronized behavior, have traditionally been found to exist in weakly coupled systems and with some form of nonlocal coupling between the oscillators. Here we show that neither the weak-coupling approximation nor nonlocal coupling are essential conditions for their existence. We obtain, for the first time, amplitude-mediated chimera states in a system of globally coupled complex Ginzburg-Landau oscillators. We delineate the dynamical origins for the formation of such states from a bifurcation analysis of a reduced model equation and also discuss the practical implications of our discovery of this broader class of chimera states.