Matching Large Deviation Bounds of the Zero-Range Process in the whole space

• Authors: Benjamin Fehrman, Benjamin Gess, Daniel Heydecker
• Preprint year: 2025
• First public date: 2025-07-31
• arXiv: 2507.23452

Abstract

We consider the large deviations of the hydrodynamic rescaling of the zero-range process on $\mathbb{Z}^d$ in any dimension $d\ge 1$. Under mild and canonical hypotheses on the local jump rate, we obtain matching upper and lower bounds, thus resolving the problem opened by \cite{KL99}. On the probabilistic side, we extend the superexponential estimate to any dimension, and prove the superexponential concentration on paths with finite entropy dissipation. In addition, we extend the theory of the parabolic-hyperbolic skeleton equation to the whole space, and remove global convexity/concavity assumptions on the nonlinearity.

Associated SAiS members

• Benjamin Gess

Associated projects

• FluCo

Research areas

• Non-equilibrium Statistical Mechanics, Interacting Particle Systems and Fluctuating Hydrodynamics

BibTeX

@article{arxiv250723452,
  title = {Matching Large Deviation Bounds of the Zero-Range Process in the whole space},
  author = {Benjamin Fehrman and Benjamin Gess and Daniel Heydecker},
  year = {2025},
  eprint = {2507.23452},
  archivePrefix = {arXiv},
  primaryClass = {math.PR}
}