AbstractBranching random walks (BRW) on groups consist of two independent processes on the Cayley graphs: branching and movement. Start with a particle on a favorite location of the graph. According to a given offspring distribution, the particles at the time n split into a random set of particles with mean $r \ge 1$, each of which then moves independently with a fixed step distribution to the ...
Abstract:This paper mainly deals with a transient random walk in Dirichlet Environment, or equivalently a linearly edge reinforced random walk, on a Galton-Watson tree. We compute stationary distributions of the environment seen from the particle in both quenched and annealed cases. With these stationary measures, we provide the almost necessary and sufficient criteria for positive speed and g...