## The Annals of Applied Probability

### Diffusion limited aggregation on the Boolean lattice

#### Abstract

In the Diffusion Limited Aggregation (DLA) process on $\mathbb{Z}^{2}$, or more generally $\mathbb{Z}^{d}$, particles aggregate to an initially occupied origin by arrivals on a random walk. The scaling limit of the result, empirically, is a fractal with dimension strictly less than $d$. Very little has been shown rigorously about the process, however.

We study an analogous process on the Boolean lattice $\{0,1\}^{n}$, in which particles take random decreasing walks from $(1,\dots,1)$, and stick at the last vertex before they encounter an occupied site for the first time; the vertex $(0,\dots,0)$ is initially occupied. In this model, we can rigorously prove that lower levels of the lattice become full, and that the process ends by producing an isolated path of unbounded length reaching $(1,\dots,1)$.

#### Article information

Source
Ann. Appl. Probab., Volume 28, Number 6 (2018), 3528-3557.

Dates
Revised: December 2017
First available in Project Euclid: 8 October 2018

https://projecteuclid.org/euclid.aoap/1538985628

Digital Object Identifier
doi:10.1214/18-AAP1392

Mathematical Reviews number (MathSciNet)
MR3861819

Zentralblatt MATH identifier
06994399

Subjects
Primary: 60C05: Combinatorial probability
Secondary: 82C24: Interface problems; diffusion-limited aggregation

Keywords
DLA Boolean cube

#### Citation

Frieze, Alan; Pegden, Wesley. Diffusion limited aggregation on the Boolean lattice. Ann. Appl. Probab. 28 (2018), no. 6, 3528--3557. doi:10.1214/18-AAP1392. https://projecteuclid.org/euclid.aoap/1538985628

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