## Electronic Journal of Probability

### Dynamics of the evolving Bolthausen-Sznitman coalecent

Jason Schweinsberg

#### Abstract

Consider a population of fixed size that evolves over time. At each time, the genealogical structure of the population can be described by a coalescent tree whose branches are traced back to the most recent common ancestor of the population. As time goes forward, the genealogy of the population evolves, leading to what is known as an evolving coalescent.  We will study the evolving coalescent for populations whose genealogy can be described by the Bolthausen Sznitman coalescent. We obtain the limiting behavior of the evolution of the time back to the most recent common ancestor and the total length of the branches in the tree. By similar methods, we also obtain a new result concerning the number of blocks in the Bolthausen-Sznitman coalescent.

#### Article information

Source
Electron. J. Probab., Volume 17 (2012), paper no. 91, 50 pp.

Dates
Accepted: 16 October 2012
First available in Project Euclid: 4 June 2016

https://projecteuclid.org/euclid.ejp/1465062413

Digital Object Identifier
doi:10.1214/EJP.v17-2378

Mathematical Reviews number (MathSciNet)
MR2988406

Zentralblatt MATH identifier
1284.92072

Rights

#### Citation

Schweinsberg, Jason. Dynamics of the evolving Bolthausen-Sznitman coalecent. Electron. J. Probab. 17 (2012), paper no. 91, 50 pp. doi:10.1214/EJP.v17-2378. https://projecteuclid.org/euclid.ejp/1465062413

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