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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Conformist-contrarian interactions and amplitude dependence in the Kuramoto model
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Conformist-contrarian interactions and amplitude dependence in the Kuramoto model

机译:仓本模型中的依从者与对立者互动以及振幅依赖性

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摘要

We derive exact formulas for the frequency of synchronized oscillations in Kuramoto models with conformist-contrarian interactions, and determine necessary conditions for synchronization to occur. Numerical computations show that for certain parameters repulsive nodes behave as conformists, and that in other cases attractive nodes can display frustration, being neither conformist nor contrarian. The signs of repulsive couplings can be placed equivalently outside the sum, as proposed in Hong and Strogatz (2011 Phys. Rev. Lett. 106 054102), or inside the sum as in Hong and Strogatz (2012 Phys. Rev. E 85 056210), but the two models have different characteristics for small magnitudes of the coupling constants. In the latter case we show that the distributed coupling constants can be viewed as oscillator amplitudes which are constant in time, with the property that oscillators of small amplitude couple only weakly to connected nodes. Such models provide a means of investigating the effect of amplitude variations on synchronization properties.
机译:我们推导了在具有一致性和对立性相互作用的仓本模型中,同步振荡频率的精确公式,并确定了发生同步的必要条件。数值计算表明,对于某些参数,排斥性节点表现为顺从性,而在其他情况下,有吸引力的节点则可能表现出挫败感,既不是顺从性也不是逆向性。可以根据Hong和Strogatz(2011 Phys.Rev.Lett.106 054102)的建议,将排斥耦合的符号等效地置于总和之外,或者像Hong和Strogatz(2012 Phys.Re. E 85 056210)一样,将排斥耦合的符号放置在总和之外。 ,但是对于较小的耦合常数,这两个模型具有不同的特性。在后一种情况下,我们表明分布式耦合常数可以看作是时间上恒定的振荡器幅度,其特性是小幅度的振荡器仅弱耦合到连接的节点。这样的模型提供了一种研究幅度变化对同步特性的影响的方法。

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