@article{Larralde1992TerritoryCB,
title={Territory covered by N diffusing particles},
author={H. Larralde and Paul Trunfio and S. Havlin and H. Stanley and G. Weiss},
journal={Nature},
year={1992},
volume={355},
pages={423-426}
}

THE number of distinct sites visited by a random walker after t steps is of great interest1–21, as it provides a direct measure of the territory covered by a diffusing particle. Thus, this quantity appears in the description of many phenomena of interest in ecology13–16, metallurgy5–7, chemistry17,18 and physics19–22. Previous analyses have been limited to the number of distinct sites visited by a single random walker19–22, but the (nontrivial) generalization to the number of distinct sites… CONTINUE READING