Electronic Journal of Probability

Dependent double branching annihilating random walk

Marton Balazs and Attila Nagy

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Double (or parity conserving) branching annihilating random walk, introduced by Sudbury in '90, is a one-dimensional non-attractive particle system in which positive and negative particles perform nearest neighbor hopping, produce two offsprings to neighboring lattice points and annihilate when they meet. Given an odd number of initial particles, positive recurrence as seen from the leftmost particle position was first proved by Belitsky, Ferrari, Menshikov and Popov in '01 and, subsequently in a much more general setup, in the article by Sturm and Swart (Tightness of voter model interfaces) in '08. These results assume that jump rates of the various moves do not depend on the configuration of the particles not involved in these moves. The present article deals with the case when the jump rates are affected by the locations of several particles in the system. Motivation for such models comes from non-attractive interacting particle systems with particle conservation. Under suitable assumptions we establish the existence of the process, and prove that the one-particle state is positive recurrent. We achieve this by arguments similar to those appeared in the previous article by Sturm and Swart. We also extend our results to some cases of long range jumps, when branching can also occur to non-neighboring sites. We outline and discuss several particular examples of models where our results apply.

Article information

Electron. J. Probab., Volume 20 (2015), paper no. 84, 32 pp.

Accepted: 13 August 2015
First available in Project Euclid: 4 June 2016

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Mathematical Reviews number (MathSciNet)

Zentralblatt MATH identifier

Primary: 60K35: Interacting random processes; statistical mechanics type models; percolation theory [See also 82B43, 82C43]

non-attractive particle system long range dependent rates double branching annihilating random walk parity conserving positive recurrence interface tightness

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Balazs, Marton; Nagy, Attila. Dependent double branching annihilating random walk. Electron. J. Probab. 20 (2015), paper no. 84, 32 pp. doi:10.1214/EJP.v20-4045. https://projecteuclid.org/euclid.ejp/1465067190

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