Weak Disorder in Fibonacci Sequences

Details Weak Disorder in Fibonacci Sequences Weak Disorder in Fibonacci Sequences

2006-03-06

arxiv.org/abs/cond-mat/0603117v1

J. Phys. A 39, L301 (2006)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 2 figures

Scientific paper

10.1088/0305-4470/39/20/L02

We study how weak disorder affects the growth of the Fibonacci series. We introduce a family of stochastic sequences that grow by the normal Fibonacci recursion with probability 1-epsilon, but follow a different recursion rule with a small probability epsilon. We focus on the weak disorder limit and obtain the Lyapunov exponent, that characterizes the typical growth of the sequence elements, using perturbation theory. The limiting distribution for the ratio of consecutive sequence elements is obtained as well. A number of variations to the basic Fibonacci recursion including shift, doubling, and copying are considered.

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