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Bibliographic Details
Main Authors: Hoffman, Christopher, Richey, Jacob, Son, Hyojeong
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2601.07816
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author Hoffman, Christopher
Richey, Jacob
Son, Hyojeong
author_facet Hoffman, Christopher
Richey, Jacob
Son, Hyojeong
contents We consider one-dimensional activated random walk (ARW) on $\mathbb{Z}$ started from a `point source' initial condition, with many particles at the origin and no other particles. We prove that, uniformly throughout a macroscopic window around the source, the probability that a site contains a sleeping particle after the configuration is stabilized is approximately the critical density. This represents a first step towards understanding the local structure of the critical stationary measure for ARW.
format Preprint
id arxiv_https___arxiv_org_abs_2601_07816
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Local Density of Activated Random Walk on $\mathbb{Z}$
Hoffman, Christopher
Richey, Jacob
Son, Hyojeong
Probability
We consider one-dimensional activated random walk (ARW) on $\mathbb{Z}$ started from a `point source' initial condition, with many particles at the origin and no other particles. We prove that, uniformly throughout a macroscopic window around the source, the probability that a site contains a sleeping particle after the configuration is stabilized is approximately the critical density. This represents a first step towards understanding the local structure of the critical stationary measure for ARW.
title Local Density of Activated Random Walk on $\mathbb{Z}$
topic Probability
url https://arxiv.org/abs/2601.07816