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Asymptotic stability of strong rarefaction waves to a parabolic-hyperbolic system arising from chemotaxis
[Submitted on 1 Jun 2026] · 2026-06-02 · via math updates on arXiv.org

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Abstract:We are interested in the asymptotic behavior of solutions toward strong rarefaction waves for a parabolic-hyperbolic system arising from chemotaxis. Suppose that the Riemann problem to the corresponding inviscid system admits rarefaction waves. We show that if the initial data is a small perturbation of an approximate rarefaction wave, then the Cauchy problem has a unique global solution that converges to the rarefaction wave asymptotically in time. The waves can be either a single rarefaction wave or a superposition of two rarefaction waves. Furthermore, the stability results hold regardless of the wave strengths. The proofs are based on the energy method, where the key observations are the monotonicity of the approximate rarefaction waves with respect to both space and time, and the appropriate replacement of spatial derivative of the hyperbolic component with the parabolic component in proper forms.

Submission history

From: Jingyu Li [view email]
[v1] Mon, 1 Jun 2026 02:05:31 UTC (21 KB)

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