Analysis of a chemotaxis model with indirect signal absorption
Analysis of a chemotaxis model with indirect signal absorption
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DOI:
10.1016/j.jde.2019.05.015
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发表时间:
2019-01
影响因子:
2.4
通讯作者:
Mario Fuest
中科院分区:
文献类型:
--
作者:
Mario Fuest
We consider the chemotaxis model {u t= Δ u−∇⋅(u∇ v), v t= Δ v− v w, w t=− δ w+ u in smooth, bounded domains Ω⊂ R n, n∈ N, where δ> 0 is a given parameter. If either n≤ 2 or‖ v 0‖ L∞(Ω)≤ 1 3 n we show the existence of a unique global classical solution (u, v, w) and convergence of (u (⋅, t), v (⋅, t), w (⋅, t)) towards a spatially constant equilibrium, as t→∞. The proof of global existence for the case n≤ 2 relies on a bootstrap procedure. As a starting point we derive a functional inequality for a functional being sublinear in u, which appears to be novel in this context.