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arXiv · 1803.10697

Large deviations of the Lyapunov exponent and localization for the 1D Anderson model

Svetlana Jitomirskaya·Xiaowen Zhu
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Abstract

The proof of Anderson localization for the 1D Anderson model with arbitrary (e.g. Bernoulli) disorder, originally given by Carmona-Klein-Martinelli in 1987, is based in part on the multi-scale analysis. Later, in the 90s, it was realized that for one-dimensional models with positive Lyapunov exponents some parts of multi-scale analysis can be replaced by considerations involving subharmonicity and large deviation estimates for the corresponding cocycle, leading to nonperturbative proofs for 1D quasiperiodic models. In this paper we present a short proof along these lines, for the Anderson model. To prove dynamical localization we also develop a uniform version of Craig-Simon's bound that works in high generality and may be of independent interest.

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Svetlana Jitomirskaya, Xiaowen Zhu. 2018-03-28. Large deviations of the Lyapunov exponent and localization for the 1D Anderson model. https://doi.org/10.1007/s00220-019-03502-8

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