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First passage behaviour of fractional Brownian motion in two-dimensional wedge domains (1102.3633v1)

Published 17 Feb 2011 in cond-mat.stat-mech

Abstract: We study the survival probability and the corresponding first passage time density of fractional Brownian motion confined to a two-dimensional open wedge domain with absorbing boundaries. By analytical arguments and numerical simulation we show that in the long time limit the first passage time density scales as t*{-1+pi(2H-2)/(2*Theta)} in terms of the Hurst exponent H and the wedge angle Theta. We discuss this scaling behaviour in connection with the reaction kinetics of FBM particles in a one-dimensional domain.

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