## Diffusion phase for some restricted perturbations. (Phase de diffusion pour des perturbations captives.)(French)Zbl 0718.35007

Journ. Équ. Dériv. Partielles, St.-Jean-De-Monts 1990, No. 5, 10 p. (1990).
This brief note studies the diffusive behaviour of certain perturbations of the diffusion equation in $$R^ n$$, with $$n\geq 3$$. A general theorem is proved and a connection established with the Schrödinger operator.

### MSC:

 35B20 Perturbations in context of PDEs 35K57 Reaction-diffusion equations
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