Misc,

The Brownian Net and Selection in the Spatial Lambda-Fleming-Viot Process

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(2015)cite arxiv:1506.01158Comment: 43 pages, 5 figures.

Abstract

We obtain the Brownian net of Sun and Swart (2008) as the scaling limit of the paths traced out by a system of continuous space and time branching and coalescing random walks. This demonstrates a certain robustness of the net, which we have not seen explored elsewhere. The walks themselves arise in a natural way as the ancestral lineages relating individuals in a sample from a biological population evolving according to the spatial Lambda-Fleming-Viot process. Our scaling reveals the effect of spatial structure on the spread of a selectively advantageous gene through such a population.

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