Inserted: 28 nov 2017
Last Updated: 20 mar 2018
Journal: Arch. Rat. Mech. Anal.
The understanding of some large energy, negative specific heat states in the Onsager description of 2D turbulence, seems to require the analysis of a subtle open problem about bubbling solutions of the mean field equation. Motivated by this application we prove that, under suitable non degeneracy assumptions on the associated $m$-vortex Hamiltonian, the $m$-point bubbling solutions of the mean field equation are non degenerate as well. Then we deduce that the Onsager mean field equilibrium entropy is smooth and strictly convex in the high energy regime on domains of second kind.
Keywords: Mean ﬁeld equations, Non degeneracy, Negative speciﬁc heat states