title: Brownian motion of spiral waves driven by spatiotemporal structured noise
abstract: Spiral chemical waves subjected to a spatiotemporal random excitability are experimentally and numerically investigated in relation to the light-sensitive Belousov-Zhabotinsky reaction. Brownian motion is identified and characterized by an effective diffusion coefficient which shows a rather complex dependence on the time and length scales of the noise relative to those of the spiral. A kinematically based model is proposed whose results are in good qualitative agreement with experiments and numerics.
authors.affiliation: Group of Nonlinear Physics, Faculty of Physics, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain.
authors.initials: I
authors.lastname: Sendina-Nadal
authors.initials: S
authors.lastname: Alonso
authors.initials: V
authors.lastname: Perez-Munuzuri
authors.initials: M
authors.lastname: Gomez-Gesteira
authors.initials: V
authors.lastname: Perez-Villar
authors.initials: L
authors.lastname: Ramirez-Piscina
authors.initials: J
authors.lastname: Casademunt
authors.initials: JM
authors.lastname: Sancho
authors.initials: F
authors.lastname: Sagues