Chimeralike states in an ensemble of globally coupled oscillators.
Chimeralike states in an ensemble of globally coupled oscillators.
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DOI：
10.1103/physrevlett.112.144103
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发表时间：
2014-02
影响因子：
8.6
通讯作者：
A. Yeldesbay;A. Pikovsky;M. Rosenblum
中科院分区：
文献类型：
--
作者：
A. Yeldesbay;A. Pikovsky;M. Rosenblum
我们证明了一个复杂的状态出现在一个均匀的合奏全球耦合相同的振荡器，让人想起嵌合体状态的非局部耦合振子晶格。在这种情况下，一部分集合形成了一个有规律的演化集群，而所有其他单位不规则地振荡，并保持异步。我们认为，嵌合体的出现，因为有效的双稳态，动态地出现在原来的单稳态系统，由于内部延迟反馈在个别单位。此外，我们提出了两个例子中的嵌合体的频率依赖的相移在全球耦合的双稳态系统。
We demonstrate the emergence of a complex state in a homogeneous ensemble of globally coupled identical oscillators, reminiscent of chimera states in nonlocally coupled oscillator lattices. In this regime some part of the ensemble forms a regularly evolving cluster, while all other units irregularly oscillate and remain asynchronous. We argue that the chimera emerges because of effective bistability, which dynamically appears in the originally monostable system due to internal delayed feedback in individual units. Additionally, we present two examples of chimeras in bistable systems with frequency-dependent phase shift in the global coupling.