Decay at infinity for parabolic equations

Details Decay at infinity for parabolic equations Decay at infinity for parabolic equations

2005-09-09

arxiv.org/abs/math/0509212v1

Mathematics

Analysis of PDEs

7 pages

Scientific paper

We consider solutions to linear parabolic equations with initial data decaying at spatial infinity. For a class of advection-diffusion equations with a spatially dependent velocity field, we study the behavior of solutions as time tends to infinity. We characterize velocity fields, so that positive solutions decay or lift-off at spatial infinity as time tends to infinity. This addresses the question of stability of the zero solution for decaying perturbations.

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