2026-04-14T09:05:11Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/187312025-12-04T21:01:17Zcom_2072_1057col_2072_478796col_2072_478823col_2072_478917

Suppression of scroll wave turbulence by noise Alonso Muñoz, Sergio Sancho, José M. Sagués i Mestre, Francesc Química física Física estadística Termodinàmica Sistemes dinàmics diferenciables Physical chemistry Statistical physics Thermodynamics Differentiable dynamical systems Rotating scroll waves are dynamical spatiotemporal structures characteristic of three-dimensional active media. It is well known that, under low excitability conditions, scroll waves develop an intrinsically unstable dynamical regime that leads to a highly disorganized pattern of wave propagation. Such a ¿turbulent¿ state bears some resemblance to fibrillation states in cardiac tissue. We show here that this unstable regime can be controlled by using a spatially distributed random forcing superimposed on a control parameter of the system. Our results are obtained from numerical simulations but an explicit analytical argument that rationalizes our observations is also presented. 2011-07-07T12:51:30Z 2011-07-07T12:51:30Z 2004 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1539-3755 https://hdl.handle.net/2445/18731 520751 eng Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.70.067201 Physical Review E, 2004, vol. 70, p. 067201(1)-067201(4) http://dx.doi.org/10.1103/PhysRevE.64.051109 (c) The American Physical Society, 2004 info:eu-repo/semantics/openAccess 4 p. application/pdf The American Physical Society Articles publicats en revistes (Física Quàntica i Astrofísica)