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arXiv 1102.4709nlin.AOnlin.CD
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动力学网络中的相干性损失:空间混沌和嵌合态

Loss of coherence in dynamical networks: spatial chaos and chimera states

Iryna Omelchenko, Yuri Maistrenko, Philipp Hövel, Eckehard Schöll

摘要:

讨论了具有非局域相互作用的耦合振子网络中空间相干性的破坏。通过系统地分析时空动力学对耦合范围和耦合强度的依赖关系,揭示了相干-非相干跃迁的动力学分岔现象,这种分岔现象始于狭窄的非相干层的出现,并最终占据整个空间.我们的研究结果耦合混沌和周期性的地图,以及时间连续的罗斯勒系统显示,中间,部分相干态代表的特征时空模式从相干到不相干的过渡。

英文摘要:

We discuss the breakdown of spatial coherence in networks of coupled oscillators with nonlocal interaction. By systematically analyzing the dependence of the spatio-temporal dynamics on the range and strength of coupling, we uncover a dynamical bifurcation scenario for the coherence-incoherence transition which starts with the appearance of narrow layers of incoherence occupying eventually the whole space. Our findings for coupled chaotic and periodic maps as well as for time-continuous Rössler systems reveal that intermediate, partially coherent states represent characteristic spatio-temporal patterns at the transition from coherence to incoherence.

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