Mathematics – Probability
Scientific paper
2012-01-21
2011, Journal of Applied Probability 48(2), 366-388
Mathematics
Probability
17 pages, one figure, one table
Scientific paper
10.1239/jap/1308662633
We consider the first-passage percolation problem on the random graph with vertex set N\times{0,1}, edges joining vertices at Euclidean distance equal to unity and independent exponential edge weights. We provide a central limit theorem for the first-passage times l_n between the vertices (0,0) and (n,0), thus extending earlier results about the almost sure convergence of l_n/n as n goes to infinity. We use generating function techniques to compute the n-step transition kernels of a closely related Markov chain which can be used to calculate explicitly the asymptotic variance in the central limit theorem.
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