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The Annals of Probability· 2026Q1

Cutoff phenomenon for asymmetric zero range process with monotone rates

Ons Rameh

Short summary

The asymmetric Zero Range process on a segment with nondecreasing rates exhibits a cutoff phenomenon in the totally asymmetric case with convex flux, and also with concave flux under strong asymmetry.

AI-generated from the title and abstract; the full text is not read.

Key points

  • Cutoff phenomenon observed in asymmetric Zero Range process with nondecreasing rates.
  • Cutoff holds for totally asymmetric case with convex flux.
  • Cutoff also holds for concave flux if asymmetry is strong enough.
  • Mixing occurs when the macroscopic system reaches equilibrium.
  • Hydrodynamic limit for irregular initial data is a key proof ingredient.

AI-generated from the title and abstract; the full text is not read.

Abstract

We investigate the mixing time of the asymmetric Zero Range process on the segment with a nondecreasing rate. We establish that the cutoff holds in the totally asymmetric case with a convex flux, and also with a concave flux if the asymmetry is strong enough. We show that the mixing occurs when the macroscopic system reaches equilibrium. A key ingredient of the proof, of independent interest, is the hydrodynamic limit for irregular initial data.

The authors' abstract, as published at the source. The Annals of Probability, 2026 · DOI ↗

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Field: Mathematical Physics

Mathematical PhysicsMathematics