Growth rates of the population in a branching Brownian motion with an inhomogeneous breeding potential

Details Growth rates of the population in a branching Brownian motion with an inhomogeneous breeding potential Growth rates of the population in a branching Brownian motion with an inhomogeneous breeding potential

2012-03-02

arxiv.org/abs/1203.0513v1

Mathematics

Probability

53 pages, 1 figure

Scientific paper

We consider a branching particle system where each particle moves as an independent Brownian motion and breeds at a rate proportional to its distance from the origin raised to the power $p$, for $p\in[0,2)$. The asymptotic behaviour of the right-most particle for this system is already known; in this article we give large deviations probabilities for particles following "difficult" paths, growth rates along "easy" paths, the total population growth rate, and we derive the optimal paths which particles must follow to achieve this growth rate.

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