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arXiv · 2609.28503

Uniform displacement bounds and Gibbs limits for periodic one-dimensional Riesz gases

Yan Ru Pei
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Abstract

For the neutral periodic one-dimensional Riesz gas with pair potential locally $-|x|^a$, $0<a<1$, we prove a particle-displacement variance bound of order $β^{-1}$, uniformly in the number of particles. Log-concavity also gives exponential displacement tails. Every stationary periodic thermodynamic limit is simple, has intensity one, and admits a stationary ordered matching to the unit lattice with the same bounds. Each limit satisfies the canonical Gibbs equations for the full-line interaction, with an ordinary symmetric spatial principal value for the exterior potential. The matching implies uniformly bounded interval number variance and a positive limiting second moment of the reciprocal-lattice Fourier average at sufficiently low temperature. The main estimate compares the inverse random Hessian, through deterministic electrical flows, to a transient long-range network.

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Yan Ru Pei. 2026-09-15. Uniform displacement bounds and Gibbs limits for periodic one-dimensional Riesz gases. https://arxiv.org/abs/2609.28503

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