We have decided to discontinue the publication of preprints on our preprint server end of 2024. The publication culture within mathematics has changed so much due to the rise of repositories such as ArXiV (www.arxiv.org) that we are encouraging all institute members to make their preprints available there. An institute's repository in its previous form is, therefore, unnecessary. The preprints published to date will remain available here, but we will not add any new preprints here.
MiS Preprint
32/1997
Existence results for mean field equations
Weiyue Ding, Jürgen Jost, Jiayu Li and Guofang Wang
Abstract
Let $\Omega$ be an annulus. We prove that the mean field equation $\begin{array} \displaystyle{-}\Delta \psi & =\frac{e^{-\beta \psi}}{\int_\Omega e^{-\beta \psi }} & in \ \Omega \\ \psi & =0 & on \ \partial \Omega \end{array}$ admits a solution for $ \beta \in (-16 \pi , -8 \ pi)$. This is a supercritical case for the Moser-Trudinger inequality.