Existence and coexistence in first-passage percolation

Daniel Ahlberg

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arXiv · 2001.04142

Existence and coexistence in first-passage percolation

Daniel Ahlberg

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Abstract

We consider first-passage percolation with i.i.d. non-negative weights coming from some continuous distribution under a moment condition. We review recent results in the study of geodesics in first-passage percolation and study their implications for the multi-type Richardson model. In two dimensions this establishes a dual relation between the existence of infinite geodesics and coexistence among competing types. The argument amounts to making precise the heuristic that infinite geodesics can be thought of as `highways to infinity'. We explain the limitations of the current techniques by presenting a partial result in dimensions higher than two.

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Daniel Ahlberg. 2020-01-13. Existence and coexistence in first-passage percolation. https://arxiv.org/abs/2001.04142

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