Berlin 2018 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 73: Poster: Networks, Chimera, Energy Systems

DY 73.8: Poster

Donnerstag, 15. März 2018, 15:30–18:00, Poster A

Chimera states in complex networks: interplay of fractal topology and delay — •Jakub Sawicki, Iryna Omelchenko, Anna Zakharova, and Eckehard Schöll — Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany

Chimera states are an example of intriguing partial synchronization patterns emerging in networks of identical oscillators. They consist of spatially coexisting domains of coherent (synchronized) and incoherent (desynchronized) dynamics. We analyze chimera states in networks of FitzHugh-Nagumo oscillators with hierarchical connectivities, and elaborate the role of time delay introduced in the coupling term. In the parameter plane of coupling strength and delay time we find tongue-like regions of existence of chimera states alternating with regions of synchronization. We demonstrate that by varying the time delay one can deliberately stabilize desired spatio-temporal patterns in the system.