|
Title:
|
Suppression of scroll wave turbulence by noise
|
|
Author:
|
Alonso Muñoz, Sergio; Sancho, José M.; Sagués i Mestre, Francesc
|
|
Other authors:
|
Universitat de Barcelona |
|
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. |
|
Publication date:
|
2011-07-26 |
|
Subject(s):
|
Química física Física estadística Termodinàmica Sistemes dinàmics diferenciables Physical chemistry Statistical physics Thermodynamics Differentiable dynamical systems |
|
Rights:
|
(c) The American Physical Society, 2004 |
|
Document type:
|
Article |
|
Share:
|
|