On the Growth of a Ballistic Deposition Model on Finite Graphs

Abstract

We revisit a ballistic deposition process introduced by Atar, Athreya and Kang. Let $\mathcal{G}=(V,E)$ be a finite connected graph. We choose independently and uniformly vertices in $\mathcal{G}$. If a vertex $x$ is chosen and the previous height configuration is given by $h=(h_y{)}_{y\in V}\in {\mathbb{N}}_0^V$, the height $h_x$ is replaced by \[ \tilde{h}_x := 1 + \max_{y \sim x} h_y. \] We study asymptotic properties of this growth model. We determine the asymptotic growth parameter $\gamma (\mathcal{G})$ for some graphs and prove a central limit theorem for the fluctuations around $\gamma (\mathcal{G})$. We also give a new graph-theoretic interpretation of an inequality obtained by Atar et al..

24 pages

References in corpus (1)

• Dependent particle deposition on a graph: concentration properties of the height profile