Abstract
In the quantum transport problem of a tight-binding Anderson model, the statistics of eigenvalues for the transfer matrices of thin disordered slabs is studied. Numerical simulations indicate that the probability distribution of nearest neighbor eigenvalue spacing and theΔ 3 statistics have already become close to that of the Gaussian orthogonal ensemble for sample lengths of the order of the mean free path, provided that transverse localization effects are not important. An intuitive argument is given why this should occur independently of the size of the matrix. Therefore, good mixing of the channels is not essential for obtaining Gaussian orthogonal ensemble type statistics and universal conductance fluctuations.
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Devillard, P. Statistics of transfer matrices for disordered quantum thin metallic slabs. J Stat Phys 62, 373–387 (1991). https://doi.org/10.1007/BF01020873
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DOI: https://doi.org/10.1007/BF01020873