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arXiv 1408.2483nlin.AOcond-mat.stat-mechnlin.CD
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部分度-频率相关的爆轰同步

Explosive synchronization with partial degree-frequency correlation

Rafael S. Pinto, Alberto Saa

摘要:

Kuramoto振子网络的振子频率与其对应顶点的度之间具有正相关性,表现出所谓的爆炸同步行为,这是目前正在深入研究的问题。在这里,我们研究和报告爆炸性同步的情况下,尚未被考虑,即当只有一部分,通常是小的,顶点进行度频率相关。我们的研究结果表明,为了有爆炸同步,它足以有度频率相关性,只有枢纽,顶点与最高的程度。此外,我们表明,部分度-频率相关性不仅促进,而且还允许爆炸性同步发生在网络中的一个完整的度-频率相关性不会允许it. We进行详尽的数值实验合成网络,也为无向和未加权版本的蠕虫秀丽隐杆线虫的神经网络。后者是一个明确的例子,部分度-频率相关导致爆炸同步滞后,在完全相关的情况下,没有爆炸同步观察。

英文摘要:

Networks of Kuramoto oscillators with a positive correlation between the oscillators frequencies and the degree of the their corresponding vertices exhibits the so-called explosive synchronization behavior, which is now under intensive investigation. Here, we study and report explosive synchronization in a situation that has not yet been considered, namely when only a part, typically small, of the vertices is subjected to a degree frequency correlation. Our results show that in order to have explosive synchronization, it suffices to have degree-frequency correlations only for the hubs, the vertices with the highest degrees. Moreover, we show that a partial degree-frequency correlation does not only promotes but also allows explosive synchronization to happen in networks for which a full degree-frequency correlation would not allow it. We perform exhaustive numerical experiments for synthetic networks and also for the undirected and unweighted version of the neural network of the worm Caenorhabditis elegans. The latter is an explicit example where partial degree-frequency correlation leads to explosive synchronization with hysteresis, in contrast with the fully correlated case, for which no explosive synchronization is observed.

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