Document Detail


Suppression of scroll wave turbulence by noise.
MedLine Citation:
PMID:  15697558     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
S Alonso; J M Sancho; F Sagués
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Publication Detail:
Type:  Journal Article     Date:  2004-12-02
Journal Detail:
Title:  Physical review. E, Statistical, nonlinear, and soft matter physics     Volume:  70     ISSN:  1539-3755     ISO Abbreviation:  Phys Rev E Stat Nonlin Soft Matter Phys     Publication Date:  2004 Dec 
Date Detail:
Created Date:  2005-02-08     Completed Date:  2005-09-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101136452     Medline TA:  Phys Rev E Stat Nonlin Soft Matter Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  067201     Citation Subset:  -    
Affiliation:
Departament de Química Física, Universitat de Barcelona, Avenida Diagonal 647, 08028 Barcelona, Spain. s.alonso@qf.ub.es
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