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On the range of the transient frog model on ℤ

Published online by Cambridge University Press:  26 June 2017

Arka Ghosh*
Affiliation:
Iowa State University
Steven Noren*
Affiliation:
Iowa State University
Alexander Roitershtein*
Affiliation:
Iowa State University
*
* Postal address: Department of Statistics, Iowa State University, Ames, IA 50011, USA.
** Postal address: Department of Mathematics, Iowa State University, Ames, IA 50011, USA.
** Postal address: Department of Mathematics, Iowa State University, Ames, IA 50011, USA.

Abstract

We observe the frog model, an infinite system of interacting random walks, on ℤ with an asymmetric underlying random walk. For certain initial frog distributions we construct an explicit formula for the moments of the leftmost visited site, as well as their asymptotic scaling limits as the drift of the underlying random walk vanishes. We also provide conditions in which the lower bound can be scaled to converge in probability to the degenerate distribution at 1 as the drift vanishes.

Type
Research Article
Copyright
Copyright © Applied Probability Trust 2017 

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