title: Role of singular tori in the dynamics of spatiotemporal nonlinear wave systems.
abstract: We show that the peculiar topological properties inherent to singular tori play a major role in the spatiotemporal dynamics of counterpropagating nonlinear waves. Under rather general conditions, these Hamiltonian wave systems exhibit a relaxation process towards a stationary state. We show that this stationary state converges exponentially towards the singular torus of the associated Liouville-integrable Hamiltonian system in the limit of an infinite medium. The singular torus then appears as an attractor for the infinite dimensional dynamical system, a feature which is illustrated by several key models of spatiotemporal wave interactions.
authors: Institut Carnot de Bourgogne, UMR CNRS 5027, BP 47870, 21078 Dijon, France. dominique.sugny@u-bourgogne.fr
authors: D
authors: D
authors: Sugny
authors: A
authors: A
authors: Picozzi
authors: S
authors: S
authors: Lagrange
authors: H R
authors: HR
authors: Jauslin