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Title: Suppression of scroll wave turbulence by noise
Author: Alonso Muñoz, Sergio
Sancho, José M.
Sagués i Mestre, Francesc
Keywords: Química física
Física estadística
Sistemes dinàmics diferenciables
Physical chemistry
Statistical physics
Differentiable dynamical systems
Issue Date: 2004
Publisher: The American Physical Society
Abstract: 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.
Note: Reproducció del document publicat a:
It is part of: Physical Review E, 2004, vol. 70, p. 067201(1)-067201(4)
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ISSN: 1539-3755
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Ciència dels Materials i Química Física)

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