Filament-induced surface spiral turbulence in three-dimensional excitable media

Publication Type:

Journal Article

Authors:

Source:

Physical Review Letters, Volume 101, Number 20 (2008)

URL:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-56249119174&doi=10.1103%2fPhysRevLett.101.208302&partnerID=40&md5=38e953a005d50a41789d733827c3a2d2

Keywords:

Creation and annihilations, Defect dynamics, Defects, Excitable medias, Filaments (lamp), Line tensions, Rate equations, Scroll waves, Statistical properties, Surface defects, Three dimensional, Turbulence, Two dimensional

Abstract:

Filament-induced surface defect-mediated turbulence in bounded three-dimensional (3D) excitable media is investigated in the regime of negative line tension. In this regime turbulence arises due to unstable filaments associated with scroll waves and is purely a 3D phenomenon. It is shown that the statistical properties of the turbulent defect dynamics can be used to distinguish surface defect-mediated turbulence from its 2D analog. Mechanisms for the creation and annihilation of surface defects are discussed and Markov rate equations are employed to model the results. © 2008 The American Physical Society.

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