Non-axially symmetric solutions of a mean field equation on 𝕊2

Abstract

Abstract We prove the existence of a family of blow-up solutions of a mean field equation on the sphere. The solutions blow up at four points where the minimum value of a potential energy function (involving the Green’s function) is attained. The four blow-up points form a regular tetrahedron. Moreover, the solutions we build have a group of symmetry T d {T_{d}} which is isomorphic to the symmetric group S 4 {S_{4}} . Other families of solutions can be similarly constructed with blow-up points at the vertices of equilateral triangles on a great circle or other inscribed platonic solids (cubes, octahedrons, icosahedrons and dodecahedrons). All of these solutions have the symmetries of the corresponding configuration, while they are non-axially symmetric.