Collective phase locked states in a chain of coupled chaotic oscillators.
We discuss the emergence of a collective phase locked state in an open chain of N unidirectionally weakly coupled nonidentical chaotic oscillators. Such a regime is characterized by a Lyapunov spectrum where N-1 exponents that were zero in the uncoupled regime assume negative values as the coupling strength increases. The dynamics of such collective state is studied, and a comparison is drawn with the case of phase synchronization of a pair of coupled chaotic oscillators. In particular, it is shown that a full phase synchronized state cannot be constructed without at least partial correlation in the chaotic amplitudes.
Valladares
D L
DL
Departamento de Fisica y Matematica Aplicada, Universidad de Navarra, Pamplona, Spain and Departamento de Física, Universidad Nacional de San Luis, Argentina.
Boccaletti
S
S
Feudel
F
F
Kurths
J
J