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Super-Brownian motion in random environment as a limit point of critical branching random walks in random environment

Research paper by Makoto Nakashima

Indexed on: 23 Apr '13Published on: 23 Apr '13Published in: Mathematics - Probability



Abstract

We focus on the existence and its characterization of limit for a certain critical branching random walks in time-space random environment in 1 dimension which was introduced by Birkner et.al. Each particle performs simple random walk on $\mathbb{Z}$ and branching mechanism depends on the time-space site. The weak limit points of this measure valued processes are characterized as a solution of the non-trivial martingale problem and called super-Brownian motions in random environment by Mytnik.