title: Chaotic spatial bifurcation by complex coupling.
abstract: A spatial bifurcation (a transition from stationary to oscillatory regime) in a chain of unidirectionally coupled phase systems is studied. It is shown that complication of coupling terms can make this bifurcation spatially chaotic in contrast to the previously observed "regular" and "predictable" type. It is demonstrated that the found type of spatial bifurcation corresponds to a smooth (predictable) manifold in the parameter space, while its spatial location gets actually unpredictable being governed by regularities of chaotic behavior. We infer that complex collective dynamics may arise in networks with plain architecture and simple dynamics of individual elements if nontrivial coupling is realized.
authors.affiliation: Department of Radiophysics, Nizhny Novgorod State University, 23 Gagarin Avenue, 603950 Nizhny Novgorod, Russia.
authors.forename: Vladimir D
authors.initials: VD
authors.lastname: Shalfeev
authors.forename: Mikhail V
authors.initials: MV
authors.lastname: Ivanchenko
authors.forename: Gian L
authors.initials: GL
authors.lastname: Forti