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June 2017 Extended convergence of the extremal process of branching Brownian motion
Anton Bovier, Lisa Hartung
Ann. Appl. Probab. 27(3): 1756-1777 (June 2017). DOI: 10.1214/16-AAP1244

Abstract

We extend the results of Arguin et al. [Probab. Theory Related Fields 157 (2013) 535–574] and Aïdékon et al. [Probab. Theory Related Fields 157 (2013) 405–451] on the convergence of the extremal process of branching Brownian motion by adding an extra dimension that encodes the “location” of the particle in the underlying Galton–Watson tree. We show that the limit is a cluster point process on $\mathbb{R}_{+}\times\mathbb{R}$ where each cluster is the atom of a Poisson point process on $\mathbb{R}_{+}\times\mathbb{R}$ with a random intensity measure $Z(dz)\times C\mathrm{e}^{-\sqrt{2}x}\,dx$, where the random measure is explicitly constructed from the derivative martingale. This work is motivated by an analogous result for the Gaussian free field by Biskup and Louidor [Full extremal process, cluster law and freezing for two-dimensional discrete Gaussian free field (2016)].

Citation

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Anton Bovier. Lisa Hartung. "Extended convergence of the extremal process of branching Brownian motion." Ann. Appl. Probab. 27 (3) 1756 - 1777, June 2017. https://doi.org/10.1214/16-AAP1244

Information

Received: 1 February 2016; Revised: 1 August 2016; Published: June 2017
First available in Project Euclid: 19 July 2017

zbMATH: 1373.60145
MathSciNet: MR3678484
Digital Object Identifier: 10.1214/16-AAP1244

Subjects:
Primary: 60G70, 60J80
Secondary: 82B44

Rights: Copyright © 2017 Institute of Mathematical Statistics

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Vol.27 • No. 3 • June 2017
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