Random walk attracted by percolation clusters
Abstract
Starting with a percolation model in $\Z^d$ in the subcritical regime, we consider a random walk described as follows: the probability of transition from $x$ to $y$ is proportional to some function $f$ of the size of the cluster of $y$. This function is supposed to be increasing, so that the random walk is attracted by bigger clusters. For $f(t)=e^{\beta t}$ we prove that there is a phase transition in $\beta$, i.e., the random walk is subdiffusive for large $\beta$ and is diffusive for small $\beta$.
- Publication:
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arXiv Mathematics e-prints
- Pub Date:
- July 2005
- DOI:
- arXiv:
- arXiv:math/0507054
- Bibcode:
- 2005math......7054P
- Keywords:
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- Mathematics - Probability;
- 60K37;
- 60J10
- E-Print:
- 13 pages