## Differential and Integral Equations

### Ground state solutions for a semilinear problem with critical exponent

#### Abstract

This work is devoted to the existence and qualitative properties of ground state solutions of the Dirchlet problem for the semilinear equation $-\Delta u-\lambda u=\vert u\vert^{2^*-2}u$ in a bounded domain. Here, $2^*$ is the critical Sobolev exponent, and the term ground state refers to minimizers of the corresponding energy within the set of nontrivial solutions. We focus on the indefinite case where $\lambda$ is larger than the first Dirichlet eigenvalue of the Laplacian, and we present a particularly simple approach to the study of ground states.

#### Article information

Source
Differential Integral Equations, Volume 22, Number 9/10 (2009), 913-926.

Dates
First available in Project Euclid: 20 December 2012