2026-04-13T02:52:55Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/127962025-12-05T17:02:06Zcom_2072_1057col_2072_478823col_2072_478917

urn:hdl:2445/12796 Brownian motion of spiral waves driven by spatiotemporal structured noise Sendiña Nadal, Irene Alonso Muñoz, Sergio Pérez Muñuzuri, Vicente Gómez-Gesteira, Moncho Pérez Villar, Vicente Ramírez Piscina, Laureano Casademunt i Viader, Jaume Sancho, José M. Sagués i Mestre, Francesc Química física Dinàmica de fluids Física estadística Physical chemistry Statistical physics Fluid dynamics 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. 2010-06-08T10:12:57Z 2010-06-08T10:12:57Z 2000 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció digital del document publicat en format paper, proporcionada per APS i http://dx.doi.org/10.1103/PhysRevLett.84.2734 Physical Review Letters, 2000, vol. 84, núm. 12, p. 2734-2737 http://dx.doi.org/10.1103/PhysRevLett.84.2734 (c) American Physical Society, 2000 info:eu-repo/semantics/openAccess American Physical Society Articles publicats en revistes (Física Quàntica i Astrofísica)