Rate of escape of random walks on wreath products and related groups.
The author proves analogues of the law of the iterated logarithm for random walks on wreath products and related groups. For groups of polynomial growth, such results can be found in [\textit{W. Hebisch} and \textit{L. Saloff-Coste}, Ann. Probab. 21, No. 2, 673--709 (1993; Zbl 0776.60086)], for those with exponential growth and linear escape rate see \textit{A. M. Vershik} [Russ. Math. Surv. 55, No. 4, 667--733 (2000); translation from Usp. Mat. Nauk 55, No. 4, 59--128 (2000; Zbl 0991.37005)]. Here, the groups studied have exponential growth but sublinear escape rate. Concrete examples studied include Lamplighter groups, Baumslag-Solitar groups and a discrete version of the Sol geometry.
scientific article; zbMATH DE number 2077581
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