title: Traveling pulse on a periodic background in parametrically driven systems.
abstract: Macroscopic systems with dissipation and time-modulated injection of energy, parametrically driven systems, can self-organize into localized states and/or patterns. We investigate a pulse that travels over a one-dimensional pattern in parametrically driven systems. Based on a minimal prototype model, we show that the pulses emerge through a subcritical Andronov-Hopf bifurcation of the underlying pattern. We describe a simple physical system, a magnetic wire forced with a transverse oscillatory magnetic field, which displays these traveling pulses.
authors.affiliation: Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 487-3, Santiago, Chile.
authors.forename: Alejandro O
authors.initials: AO
authors.lastname: León
authors.affiliation: Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 487-3, Santiago, Chile.
authors.forename: Marcel G
authors.initials: MG
authors.lastname: Clerc
authors.affiliation: Laboratoire de Physique des Lasers, Atomes et Molécules, CNRS UMR 8523, Université des Sciences et Technologies de Lille-59655 Villeneuve d'Ascq Cedex, France, EU.
authors.forename: Saliya
authors.initials: S
authors.lastname: Coulibaly