Two-dimensional random interlacements and late points for random walks. (English) Zbl 1336.60185
Summary: We define the model of two-dimensional random interlacements using simple random walk trajectories conditioned on never hitting the origin, and then obtain some properties of this model. Also, for a random walk on a large torus conditioned on not hitting the origin up to some time proportional to the mean cover time, we show that the law of the vacant set around the origin is close to that of random interlacements at the corresponding level. Thus, this new model provides a way to understand the structure of the set of late points of the covering process from a microscopic point of view.
MSC:
| 60K35 | Interacting random processes; statistical mechanics type models; percolation theory |
| 60G50 | Sums of independent random variables; random walks |
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