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A Chemotaxis Model with Threshold Density and Degenerate Diffusion

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Part of the book series: Progress in Nonlinear Differential Equations and Their Applications ((PNLDE,volume 64))

Abstract

A quasilinear degenerate parabolic system modelling the chemotactic movement of cells is studied. The system under consideration has a similar structure as the classical Keller-Segel model, but with the following features: there is a threshold value which the density of cells cannot exceed and the flux of cells vanishes when the density of cells reaches this threshold value. Existence and uniqueness of weak solutions are proved. In the one-dimensional case, flat-hump-shaped stationary solutions are constructed.

The second author was supported by Polish KBN grant 2 P03A 03022.

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© 2005 Birkhäuser Verlag Basel/Switzerland

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Laurençot, P., Wrzosek, D. (2005). A Chemotaxis Model with Threshold Density and Degenerate Diffusion. In: Brezis, H., Chipot, M., Escher, J. (eds) Nonlinear Elliptic and Parabolic Problems. Progress in Nonlinear Differential Equations and Their Applications, vol 64. Birkhäuser Basel. https://doi.org/10.1007/3-7643-7385-7_16

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