title: Chaoticon: localized pattern with permanent dynamics.
abstract: An analytical mechanism that support localized spatio-temporal chaos is provided. We consider a simple model-the Nagumo Kuramoto model-which contains the crucial ingredients for observing localized spatio-temporal chaos, namely, the spatio-temporal chaotic pattern and its coexistence with a uniform state. This model allows us to unveil the front dynamics and to show that it can be described by a chaotic motor corresponding to the deterministic counterpart of a Brownian motor. Front interaction is identified as the mechanism at the origin of the localized spatio-temporal chaotic structures.
authors.affiliation: Departamento de Física, FCFM, Universidad de Chile, Casilla 487-3, Santiago, Chile.
authors.forename: N
authors.initials: N
authors.lastname: Verschueren
authors.affiliation: INLN, Université de Nice-Sophia Antipolis, CNRS, 1361 route des Lucioles, 06560 Valbonne, France.
authors.forename: U
authors.initials: U
authors.lastname: Bortolozzo
authors.affiliation: Departamento de Física, FCFM, Universidad de Chile, Casilla 487-3, Santiago, Chile marcel@dfi.uchile.cl.
authors.forename: M G
authors.initials: MG
authors.lastname: Clerc
authors.affiliation: INLN, Université de Nice-Sophia Antipolis, CNRS, 1361 route des Lucioles, 06560 Valbonne, France.
authors.forename: S
authors.initials: S
authors.lastname: Residori
keywords: localized structures; pattern formation; spatio-temporal chaos