Ruzzene, GiuliaOmelchenko, IrynaSchöll, EckehardZakharova, AnnaAndrzejak, Ralph Gregor2019-05-242019-05-242019Ruzzene G, Omelchenko I, Schöll E, Zakharova A, Andrzejak RG. Controlling chimera states via minimal coupling modification. Chaos. 2019 May 7;29:051103. DOI: 10.1063/1.50975701054-1500http://hdl.handle.net/10230/37294We propose a method to control chimera states in a ring-shaped network of nonlocally coupled phase oscillators. This method acts exclusivelyon the network’s connectivity. Using the idea of a pacemaker oscillator, we investigate which is the minimal action needed to control chimeras.We implement the pacemaker choosing one oscillator and making its links unidirectional. Our results show that a pacemaker induces chimerasfor parameters and initial conditions for which they do not form spontaneously. Furthermore, the pacemaker attracts the incoherent part of thechimera state, thus controlling its position. Beyond that, we find that these control effects can be achieved with modifications of the network’sconnectivity that are less invasive than a pacemaker, namely, the minimal action of just modifying the strength of one connection allows oneto control chimeras.application/pdfeng© American Institute of Physics. The following article appeared in Ruzzene G, Omelchenko I, Schöll E, Zakharova A, Andrzejak RG. Chaos. 2019 May 7;29:051103 and may be found at https://aip.scitation.org/doi/10.1063/1.5097570info:eu-repo/semantics/articlehttp://dx.doi.org/10.1063/1.5097570info:eu-repo/semantics/openAccess