Frequency clustering of coupled phase oscillators on small-world networks

被引:18
作者
Morelli, LG
Cerdeira, HA
Zanette, DH
机构
[1] Abdus Salam Int Ctr Theoret Phys, I-34100 Trieste, Italy
[2] Ctr Atom Bariloche, Consejo Nacl Invest Cient & Tecn, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
[3] Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
关键词
D O I
10.1140/epjb/e2005-00046-2
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We analyze the phenomenon of frequency clustering in a system of coupled phase oscillators. The oscillators, which in the absence of coupling have uniformly distributed natural frequencies, are coupled through a small-world network, built according to the Watts-Strogatz model. We study the time evolution and determine variations in the transient times depending on the disorder of the network and on the coupling strength. We investigate the effects of fluctuations in the average frequencies, and discuss the definition of the threshold for synchronization. We characterize the structure of clusters and the distribution of cluster sizes in the synchronization transition, and de. ne suitable order parameters to describe the aggregation of the oscillators as the network disorder and the coupling strength change. The non-monotonic behavior observed in some order parameters is related to fluctuations in the mean frequencies.
引用
收藏
页码:243 / 250
页数:8
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