Logarithmic, Coulomb and Riesz energy of point processes

TL;DR

This paper introduces a unified framework for defining and analyzing logarithmic, Coulomb, and Riesz interactions in infinite point processes across dimensions, linking them to renormalized energies and studying their extremal behaviors.

Contribution

It establishes a new definition of interaction energies for infinite charged point configurations and connects these to the renormalized energy framework, with applications to specific point processes.

Findings

Convergence of Sine-beta processes to Poisson in high-temperature limit

Crystallization results in low-temperature limit for 1D systems

Explicit energy expressions inspired by Borodin-Serfaty

Abstract

We define a notion of logarithmic, Coulomb and Riesz interactions in any dimension for random systems of infinite charged point configurations with a uniform background of opposite sign. We connect this interaction energy with the "renormalized energy" studied by Serfaty et al., which appears in the free energy functional governing the microscopic behavior of logarithmic, Coulomb and Riesz gases. Minimizers of this functional include the Sine-beta processes in the one-dimensional Log-gas case. Using our explicit expression (inspired by the work of Borodin-Serfaty) we prove their convergence to the Poisson process in the high-temperature limit as well as a crystallization result in the low-temperature limit for one-dimensional systems.