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Damage spreading and Lyapunov exponents in cellular automata

F. Bagnoli, R. Rechtman, S. Ruffo

cond-mat.stat-mecharXiv:cond-mat/9811159

Abstract

Using the concept of the Boolean derivative we study damage spreading for one dimensional elementary cellular automata and define their maximal Lyapunov exponent. A random matrix approximation describes quite well the behavior of ``chaotic'' rules and predicts a directed percolation-type phase transition. After the introduction of a small noise elementary cellular automata reveal the same type of transition.

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