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A mean field equation involving positively supported probability measures: blow-up phenomena and variational aspects

Published online by Cambridge University Press:  27 December 2018

Aleks Jevnikar
Affiliation:
Department of Mathematics, University of Pisa, Largo Bruno Pontecorvo 5, 56127 Pisa, Italy (aleks.jevnikar@dm.unipi.it)
Wen Yang
Affiliation:
Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, P.O. Box 71010, Wuhan 430071, P. R. China (wyang@wipm.ac.cn)

Abstract

We are concerned with an elliptic problem which describes a mean field equation of the equilibrium turbulence of vortices with variable intensities. In the first part of the paper, we describe the blow-up picture and highlight the differences from the standard mean field equation as we observe non-quantization phenomenon. In the second part, we discuss the Moser–Trudinger inequality in terms of the blow-up masses and get the existence of solutions in a non-coercive regime by means of a variational argument, which is based on some improved Moser–Trudinger inequalities.

Information

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 2018 

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