Depinning transitions in discrete reaction-diffusion equations
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2003
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Society for Industrial and Applied Mathematics
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Carpio Rodríguez, A. M., Bonilla, L. L. «Depinning Transitions in Discrete Reaction-Diffusion Equations». SIAM Journal on Applied Mathematics, vol. 63, n.o 3, enero de 2003, pp. 1056-82. DOI.org (Crossref), https://doi.org/10.1137/S003613990239006X.
Abstract
We consider spatially discrete bistable reaction-diffusion equations that admit wave front solutions. Depending on the parameters involved, such wave fronts appear to be pinned or to glide at a certain speed. We study the transition of traveling waves to steady solutions near threshold and give conditions for front pinning (propagation failure). The critical parameter values are characterized at the depinning transition, and an approximation for the front speed just beyond threshold is given.