03-369 H. Schulz-Baldes
Perturbation theory for Lyapunov exponents of an Anderson model on a strip (1822K, Postscript) Aug 14, 03
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Abstract. It is proven that the localization length of an Anderson model on a strip of width $L$ is bounded above by $L/\lambda^2$ for small values of the coupling constant $\lambda$ of the disordered potential. For this purpose, a new formalism is developed in order to calculate the bottom Lyapunov exponent associated with random products of large symplectic matrices perturbatively in the coupling constant of the randomness.

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