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arXiv 1409.8071nlin.CD
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振子网络中从振幅到振荡死亡的过渡

Transition from amplitude to oscillation death in a network of oscillators

Mauparna Nandan, C. R. Hens, Pinaki Pal, Syamal K. Dana

摘要:

我们报告了从均匀稳态(HSS)到非均匀稳态(IHSSs)在全球耦合的同振子网络的过渡。我们扰动了网络中的同步人口与一些本地负平均场链接。据观察,整个人口分裂成两个集群为一定数量的负平均场链接和特定范围内的耦合强度。为了进一步增加相互作用的强度,这些集群崩溃到HSS,然后过渡到IHSS。我们分析确定HSS的起源和过渡到IHSS的负平均场链接的数量和相互作用的强度使用还原论的方法模型网络中的两个集群状态。以典型的Landau-Stuart极限环系统和混沌Rossler振子为动力学节点的网络为例,验证了所得结果.在从HSS到IHSS的过渡过程中,网络遵循图灵型对称破缺叉或跨临界分岔,这取决于系统动力学。

英文摘要:

We report a transition from a homogeneous steady state (HSS) to inhomogeneous steady states (IHSSs) in a network of globally coupled identical oscillators. We perturb a synchronized population in the network with a few local negative mean field links. It is observed that the whole population splits into two clusters for a certain number of negative mean field links and specific range of coupling strength. For further increases of the strength of interaction these clusters collapse to a HSS followed by a transition to IHSSs. We analytically determine the origin of HSS and its transition to IHSS in relation to the number of negative mean-field links and the strength of interaction using a reductionism approach to the model network in a two-cluster state. We verify the results with numerical examples of networks using the paradigmatic Landau-Stuart limit cycle system and the chaotic Rossler oscillator as dynamical nodes. During the transition from HSS to IHSSs, the network follows the Turing type symmetry breaking pitchfork or transcritical bifurcation depending upon the system dynamics.

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