Minimal energy on the circle

Abstract

We find minimizing configurations for most of the Riesz-$s$ energies on the unit circle $S^{1}$ . We also provide a complete asymptotic expansion of the Riesz-$s$ energy associated to $N$ equally spaced points on the $S^{1}$. Finally, we present Chui's conjecture, prove a partial result and show how it leads to an interesting consequence about function approximation in the Bergman space.