Wavy fronts and speed bifurcation in excitable systems with cross diffusion.
Phys Rev E Stat Nonlin Soft Matter Phys
; 77(3 Pt 2): 036219, 2008 Mar.
Article
em En
| MEDLINE
| ID: mdl-18517497
ABSTRACT
A bifurcation of excitation fronts induced by cross diffusion in two-component bistable reaction-diffusion systems of activator-inhibitor type is discovered. This bifurcation is similar to the nonequilibrium Ising-Bloch bifurcation. A different type of fronts, whose spatial profiles are characterized by oscillating tails, are associated with this bifurcation. These fronts are described using exact analytical solutions of piecewise linear reaction-diffusion equations.
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev E Stat Nonlin Soft Matter Phys
Assunto da revista:
BIOFISICA
/
FISIOLOGIA
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Federação Russa