Nonlinear Sciences – Chaotic Dynamics
Scientific paper
2006-09-30
Journal of Experimental and Theoretical Physics, 2006, Vol. 103, No. 4, pp. 654-665
Nonlinear Sciences
Chaotic Dynamics
12 pages
Scientific paper
10.1134/S1063776106100189
Generalized synchronization is analyzed in unidirectionally coupled oscillatory systems exhibiting spatiotemporal chaotic behavior described by Ginzburg-Landau equations. Several types of coupling betweenthe systems are analyzed. The largest spatial Lyapunov exponent is proposed as a new characteristic of the state of a distributed system, and its calculation is described for a distributed oscillatory system. Partial generalized synchronization is introduced as a new type of chaotic synchronization in spatially nonuniform distributed systems. The physical mechanisms responsible for the onset of generalized chaotic synchronization in spatially distributed oscillatory systems are elucidated. It is shown that the onset of generalized chaotic synchronization is described by a modified Ginzburg-Landau equation with additional dissipation irrespective of the type of coupling. The effect of noise on the onset of a generalized synchronization regime in coupled distributed systems is analyzed.
Hramov Alexander E.
Koronovskii Alexey A.
Popov Pavel V.
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