1304.7569 (Djalil Chafaï et al.)

First order global asymptotics for Calogero-Sutherland gases    [PDF]

Djalil Chafaï, Nathael Gozlan, Pierre-André Zitt

We study a physical system of N interacting particles in Rd subject to pair repulsion and confined by an external field. We establish a large deviations principle for their empirical measure as N tends to infinity. In the case of Riesz interaction, including Coulomb interaction in arbitrary dimension d > 2, the rate function is strictly convex and admits a unique minimum, the equilibrium measure, characterized via its potential. It follows that almost surely, the empirical distribution of the particles tends to this equilibrium measure as N tends to infinity. In the more specific case of Coulomb interaction in dimension d > 2, and when the external field is a convex or increasing function of the radius, then the equilibrium measure is supported in a ring. With a quadratic external field, the equilibrium measure is uniform on a ball.

View original: http://arxiv.org/abs/1304.7569