Localization for Random Unitary Operators

@inproceedings{Hamza2006LocalizationFR,
  title={Localization for Random Unitary Operators},
  author={Eman Hamza and Alain Joye and Gunter Stolz},
  year={2006}
}
We consider unitary analogs of 1−dimensional Anderson models on l2(Z) defined by the product Uω = DωS where S is a deterministic unitary and Dω is a diagonal matrix of i.i.d. random phases. The operator S is an absolutely continuous band matrix which depends on a parameter controlling the size of its off-diagonal elements. We prove that the spectrum of Uω is pure point almost surely for all values of the parameter of S. We provide similar results for unitary operators defined on l2(N) together… CONTINUE READING

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