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Time-delayed feedback control of coherence resonance chimeras.

Research paper by Anna A Zakharova, Nadezhda N Semenova, Vadim V Anishchenko, Eckehard E Schöll

Indexed on: 03 Dec '17Published on: 03 Dec '17Published in: Chaos (Woodbury, N.Y.)



Abstract

Using the model of a FitzHugh-Nagumo system in the excitable regime, we investigate the influence of time-delayed feedback on noise-induced chimera states in a network with nonlocal coupling, i.e., coherence resonance chimeras. It is shown that time-delayed feedback allows for the control of the range of parameter values where these chimera states occur. Moreover, for the feedback delay close to the intrinsic period of the system, we find a novel regime which we call period-two coherence resonance chimera.