Chimeras and Clusters Emerging from Robust-Chaos Dynamics

We show that dynamical clustering, where a system segregates into distinguishable subsets of synchronized elements, and chimera states, where differentiated subsets of synchronized and desynchronized elements coexist, can emerge in networks of globally coupled robust-chaos oscillators. We describe the collective behavior of a model of globally coupled robust-chaos maps in terms of statistical quantities and characterize clusters, chimera states, synchronization, and incoherence on the space of parameters of the system. We employ the analogy between the local dynamics of a system of globally coupled maps with the response dynamics of a single driven map. We interpret the occurrence of clusters and chimeras in a globally coupled system of robust-chaos maps in terms of windows of periodicity and multistability induced by a drive on the local robust-chaos map. Our results show that robust-chaos dynamics does not limit the formation of cluster and chimera states in networks of coupled systems, as it had been previously conjectured.

Automated summary

In this study, we demonstrate the emergence of dynamic clustering and chimera states in networks of globally coupled robust-chaos oscillators. Through statistical analysis, we characterize the collective behavior of these systems in terms of synchronization, incoherence, and the presence of clusters and chimeras. Additionally, we find that the dynamics of robust chaos does not limit the formation of these states in coupled networks, contrary to previous conjectures.