title: Correlation decay and partial coherence in nonlinear wave interactions.
abstract: In the present analysis we study the broad-band triplet interaction in regimes of large amplitudes. Linear response theories associated with nonlinear arguments are used to show that even though coherence of high-frequency modes is lost as one first encounters chaotic regimes, it can be restored as field amplitudes grow further. We discuss implications of the feature for fixed-phase interactions.
authors.affiliation: Instituto de Física, Universidade Federal do Rio Grande do Sul, Caixa Postal 15051, 91501-970 Porto Alegre, Rio Grande do Sul, Brazil. rizzato@if.ufrgs.br
authors.forename: F B
authors.initials: FB
authors.lastname: Rizzato
authors.forename: R
authors.initials: R
authors.lastname: Pakter
authors.forename: S R
authors.initials: SR
authors.lastname: Lopes