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arXiv · 1104.3696

Convergence to a propagating front in a degenerate Fisher-KPP equation with advection

Matthieu Alfaro·Elisabeth Logak
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Abstract

We consider a Fisher-KPP equation with density-dependent diffusion and advection, arising from a chemotaxis-growth model. We study its behavior as a small parameter, related to the thickness of a diffuse interface, tends to zero. We analyze, for small times, the emergence of transition layers induced by a balance between reaction and drift effects. Then we investigate the propagation of the layers. Convergence to a free-boundary limit problem is proved and a sharp estimate of the thickness of the layers is provided.

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Matthieu Alfaro, Elisabeth Logak. 2011-04-19. Convergence to a propagating front in a degenerate Fisher-KPP equation with advection. https://arxiv.org/abs/1104.3696

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