Extended non-stationary chimera-like region in a network of non-identical coupled Van der Pol’s oscillators

Authors: Haikong Lu, Fatemeh Parastesh, Artur Dabrowski, Hamed Azarnoush, Sajad Jafari

Publication date: 2020

 

Journal: The European Physical Journal Special Topics

Publisher: Springer Berlin Heidelberg

 

Description: Chimera states are peculiar spatiotemporal patterns of coupled oscillators composed of coherent and incoherent groups. In this paper, we study a network of non-identical coupled Van der Pol’s oscillators and investigate the robustness of the chimera states against the oscillators frequency mismatches. The dynamical behaviors of the network are obtained for various coupling strengths and ranges, in different inhomogeneity levels, and the phase diagrams are presented. It is observed that the parameter inhomogeneity leads to the occurrence of synchronization in higher coupling strengths and expansion of the chimera region. In contrast to the identical network, in the non-identical network, a great deal of the chimera region belongs to the non-stationary chimera.

 

Total citations: 2

 

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