Abstract:Let (X, d) be a separable geodesic Gromov-hyperbolic space, o ∈ X a basepoint and µ a countably supported non-elementary probability measure on Isom(X). Denote by zn the random walk on X driven by the probability measure µ. Supposing that µ has a finite exponential moment, we give a second-order Taylor expansion of the large deviation rate function of the sequence 1 n d(zn, o) and show that the corresponding coefficient is expressed by the variance in the central limit theorem satisfied by the sequence d (zn, … Show more
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