The Annals of Probability

Internal Diffusion Limited Aggregation

Gregory F. Lawler, Maury Bramson, and David Griffeath

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We study the asymptotic shape of the occupied region for an interacting lattice system proposed recently by Diaconis and Fulton. In this model particles are repeatedly dropped at the origin of the $d$-dimensional integers. Each successive particle then performs an independent simple random walk until it "sticks" at the first site not previously occupied. Our main theorem asserts that as the cluster of stuck particles grows, its shape approaches a Euclidean ball. The proof of this result involves Green's function asymptotics, duality and large deviation bounds. We also quantify the time scale of the model, establish close connections with a continuous-time variant and pose some challenging problems concerning more detailed aspects of the dynamics.

Article information

Ann. Probab., Volume 20, Number 4 (1992), 2117-2140.

First available in Project Euclid: 19 April 2007

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Primary: 60K35: Interacting random processes; statistical mechanics type models; percolation theory [See also 82B43, 82C43]

Growth model random walk interacting particle system diffusion limited aggregation


Lawler, Gregory F.; Bramson, Maury; Griffeath, David. Internal Diffusion Limited Aggregation. Ann. Probab. 20 (1992), no. 4, 2117--2140. doi:10.1214/aop/1176989542.

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