Local induction of spatio-temporal chaos

G. Baier, A. Ramírez, I. Amaro, M. Müller


A periodic perturbation of one excitable system causes a symmetry-breaking instability in two reversibly coupled neighbors. The result is applied to a two-dimensional extended system. Tuning of the local perturbation frequency causes a regular target pattern to switch first to circular chaotic waves and then to chaotic wave fragments. Thus a global order-disorder transition can be induced by local control in an otherwise homogeneous medium.


Spatio-temporal chaos; order-disorder transition; local control

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Revista Mexicana de Física

ISSN: 2683-2224 (on line), 0035-001X (print)

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