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Moments and distribution of the local times of a transient random walk on \(\mathbb Z^{d}\) - MaRDI portal

Moments and distribution of the local times of a transient random walk on \(\mathbb Z^{d}\) (Q1028619)

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Moments and distribution of the local times of a transient random walk on \(\mathbb Z^{d}\)
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    Moments and distribution of the local times of a transient random walk on \(\mathbb Z^{d}\) (English)
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    6 July 2009
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    Let \(\{S_n, n\geq 1\}\) be a transient random walk in \(\mathbb Z^d\) which is genuinely \(d\)-dimensional and \[ l(n,x) = \sum_{i=0}^n {\mathbf 1}_{\{S_i =x\}}, \quad n\in{\mathbb N}, \, x\in\mathbb Z^d \] be its local time process. The authors prove a strong law of large numbers for \[ L_n(\alpha) = \sum_{x\in \mathbb Z^d} l(n,x)^\alpha, \quad n\to \infty. \] Furthermore, they show that the asymptotic law of the local time in a random site uniformly distributed over the range is geometric.
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    random walk
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    local time
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