title: Coupling of low-frequency modes with the complex Ginzburg-Landau equation: Generalized Zakharov equations.
abstract: In this paper we introduce and examine a generalization of the complex Ginzburg-Landau equation (CGLE) where the self-interaction contained in the cubic term is replaced by a coupling involving the original field and a low-frequency one. New instabilities arise and a radically new asymptotic dynamical behavior emerges displaying defect turbulence over wide regions of the parameter space.
authors.affiliation: Instituto de Física, Universidade Federal do Rio Grande do Sul, Caixa Postal 15051, 91501-970 Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: R
authors.initials: R
authors.lastname: Erichsen
authors.forename: L G
authors.initials: LG
authors.lastname: Brunnet
authors.forename: F B
authors.initials: FB
authors.lastname: Rizzato