Cookie branching random walks

Details Cookie branching random walks Cookie branching random walks

2011-06-08

arxiv.org/abs/1106.1688v1

Mathematics

Probability

2 figures

Scientific paper

We consider a branching random walk on $\Z$, where the particles behave differently in visited and unvisited sites. Informally, each site on the positive half-line contains initially a cookie. On the first visit of a site its cookie is removed and particles at positions with a cookie reproduce and move differently from particles on sites without cookies. Therefore, the movement and the reproduction of the particles depend on the previous behaviour of the population of particles. We study the question if the process is recurrent or transient, i.e., whether infinitely many particles visit the origin or not.

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