BOUNDARY-INDUCED DRIFT OF SPIRALS IN EXCITABLE MEDIA

Authors
ARANSON I KESSLER D MITKOV I
Citation
I. Aranson et al., BOUNDARY-INDUCED DRIFT OF SPIRALS IN EXCITABLE MEDIA, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 50(4), 1994, pp. 180002395-180002398
Citations number
28
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
50
Issue
4
Year of publication
1994
Pages
180002395 - 180002398
Database
ISI
SICI code
1063-651X(1994)50:4<180002395:BDOSIE>2.0.ZU;2-8
Abstract
The motion of a spiral wave in an excitable medium due to interaction with a boundary is considered. The drift of the core and the frequency shift, evaluated analytically as a response to a small perturbation o f the boundary, are found to be superexponentially weak. It is shown t hat for some range of parameters the spiral is unstable to small displ acements away from the center of a circular domain.