Existence and stability properties of entire solutions to the polyharmonic equation (-Delta)(m)u = e(u) for any m >= 1

Alberto Farina (1) , Alberto Ferrero

1 LAMFA - Laboratoire Amiénois de Mathématique Fondamentale et Appliquée - UMR CNRS 7352

We study existence and stability properties of entire solutions of a polyharmonic equation with an exponential nonlinearity. We study existence of radial entire solutions and we provide some asymptotic estimates on their behavior at infinity. As a first result on stability we prove that stable solutions (not necessarily radial) in dimensions lower than the conformal one never exist. On the other hand, we prove that radial entire solutions which are stable outside a compact set always exist both in high and low dimensions. In order to prove stability of solutions outside a compact set we prove some new Hardy-Rellich type inequalities in low dimensions. (C) 2014 Elsevier Masson SAS. All rights reserved.

Domaines: Mathématiques [math]

Alberto Farina, Alberto Ferrero. Existence and stability properties of entire solutions to the polyharmonic equation (-Delta)(m)u = e(u) for any m >= 1. Annales de l'Institut Henri Poincaré C, Analyse non linéaire, 2016, 33 (2), pp.495-528. ⟨10.1016/j.anihpc.2014.11.005⟩. ⟨hal-03621421⟩