Iterated random walk

Details Iterated random walk Iterated random walk

2003-12-15

arxiv.org/abs/cond-mat/0312358v1

Europhys. Lett. 65 (2004) 627-632

Physics

Condensed Matter

Statistical Mechanics

7 pages, 2 figures

Scientific paper

10.1209/epl/i2003-10165-4

The iterated random walk is a random process in which a random walker moves on a one-dimensional random walk which is itself taking place on a one-dimensional random walk, and so on. This process is investigated in the continuum limit using the method of moments. When the number of iterations goes to infinity, a time-independent asymptotic density is obtained. It has a simple symmetric exponential form which is stable against the modification of a finite number of iterations. When n is large, the deviation from the stationary density is exponentially small in n. The continuum results are compared to Monte Carlo data for the discrete iterated random walk.

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