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Continuity for the asymptotic shape in the frog model with random initial configurations

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  • Kubota, Naoki

Abstract

We consider the so-called frog model with random initial configurations, which is described by the following evolution mechanism of simple random walks on the multidimensional cubic lattice: Some particles are randomly assigned to any site of the multidimensional cubic lattice. Initially, only particles at the origin are active and they independently perform simple random walks. The other particles are sleeping and do not move at first. When sleeping particles are hit by an active particle, they become active and start doing independent simple random walks. An interest of this model is how initial configurations affect the asymptotic shape of the set of all sites visited by active particles up to a certain time. Thus, in this paper, we prove continuity for the asymptotic shape in the law of the initial configuration.

Suggested Citation

  • Kubota, Naoki, 2020. "Continuity for the asymptotic shape in the frog model with random initial configurations," Stochastic Processes and their Applications, Elsevier, vol. 130(9), pages 5709-5734.
    • Handle: RePEc:eee:spapps:v:130:y:2020:i:9:p:5709-5734
    DOI: 10.1016/j.spa.2020.04.005
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