arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1503.02310nlin.AO
收藏

相干诱导相位校正耦合相位振子系综的同步跃迁

Synchronization transition in ensemble of coupled phase oscillators with coherence-induced phase correction

Sergey Belan

摘要:

研究了具有随机分布固有频率的自校正噪声相位振荡器群体的同步现象。在我们的模型中,每个振荡器以与相位相干度成比例的典型速率将其相位随机切换到集合平均值$ψ$,该速率$r$。该系统表现出连续的相变到集体同步类似于经典的仓本模型。基于非相干态的线性稳定性分析和自洽论证,我们解析地导出了部分同步态开始时的耦合常数的阈值$k_c$。在跃迁点之上,发现了线性标度律$r\propto k-k_c$,并指出相位校正率与序参量之间的非线性关系导致了非相干性与同步性之间的非平凡跃迁。为了说明我们的分析结果,数值模拟已经进行了大量的相位振荡器与建议的耦合类型。这项工作的结果可能成为有用的设计分布式网络系统能够自同步。

英文摘要:

We study synchronization phenomenon in a self-correcting population of noisy phase oscillators with randomly distributed natural frequencies. In our model each oscillator stochastically switches its phase to the ensemble-averaged value $ψ$ at a typical rate which is proportional to the degree of phase coherence $r$. The system exhibits a continuous phase transition to collective synchronization similar to classical Kuramoto model. Based on the self-consistent arguments and on the linear stability analysis of an incoherent state we derive analytically the threshold value $k_c$ of coupling constant corresponding to the onset of a partially synchronized state. Just above the transition point the linear scaling law $r\propto k-k_c$ is found. We also show that nonlinear relation between rate of phase correction and order parameter leads to non-trivial transition between incoherence and synchrony. To illustrate our analytical results, numerical simulations have been performed for a large population of phase oscillators with proposed type of coupling. The results of this work could become useful in designing distributed networked systems capable of self-synchronization.

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。

↑