- Volume 24, Number 2 (2018), 1576-1612.
On branching process with rare neutral mutation
In this paper, we study the genealogical structure of a Galton–Watson process with neutral mutations. Namely, we extend in two directions the asymptotic results obtained in Bertoin [Stochastic Process. Appl. 120 (2010) 678–697]. In the critical case, we construct the version of the model in Bertoin [Stochastic Process. Appl. 120 (2010) 678–697], conditioned not to be extinct. We establish a version of the limit theorems in Bertoin [Stochastic Process. Appl. 120 (2010) 678–697], when the reproduction law has an infinite variance and it is in the domain of attraction of an $\alpha$-stable distribution, both for the unconditioned process and for the process conditioned to nonextinction. In the latter case, we obtain the convergence (after re-normalization) of the allelic sub-populations towards a tree indexed CSBP with immigration.
Bernoulli, Volume 24, Number 2 (2018), 1576-1612.
Received: August 2015
Revised: June 2016
First available in Project Euclid: 21 September 2017
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Blancas, Airam; Rivero, Víctor. On branching process with rare neutral mutation. Bernoulli 24 (2018), no. 2, 1576--1612. doi:10.3150/16-BEJ907. https://projecteuclid.org/euclid.bj/1505980904