An Existence Result for the Mean Field Equation on Compact Surfaces in a Doubly Supercritical Regime

Abstract

We consider a class of variational equations with exponential nonlinearities on a compact Riemannian surface, describing the mean field equation of the equilibrium turbulance with arbitrarily signed vortices. For the first time, we consider the problem with both supercritical parameters and we give an existence result by using variational methods. In doing this, we present a new Moser-Trudinger type inequality under suitable conditions on the center of mass and the scale of concentration of both e^u and e^{-u}, where u is the unknown function in the equation.

23 pages. arXiv admin note: text overlap with arXiv:1105.3701 by other authors. The proof of Lemma 3.9 has been fixed

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