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On the Markov Transition Kernels for First Passage Percolation on the Ladder

Published online by Cambridge University Press:  14 July 2016

Eckhard Schlemm*
Affiliation:
Technische Universität München
*
Postal address: TUM Institute for Advanced Study & Zentrum Mathematik, Technische Universität München, Boltzmannstrasse 3, 85748 Garching bei München, Germany. Email address: [email protected]
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Abstract

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We consider the first passage percolation problem on the random graph with vertex set N x {0, 1}, edges joining vertices at a Euclidean distance equal to unity, and independent exponential edge weights. We provide a central limit theorem for the first passage times ln between the vertices (0, 0) and (n, 0), thus extending earlier results about the almost-sure convergence of ln / n as n → ∞. We use generating function techniques to compute the n-step transition kernels of a closely related Markov chain which can be used to explicitly calculate the asymptotic variance in the central limit theorem.

Type
Research Article
Copyright
Copyright © Applied Probability Trust 2011 

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