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Smoothness of correlations in the Anderson model at strong disorder

机译:强障碍下Anderson模型中相关性的平滑度

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摘要

We study the higher-order correlation functions of covariant families of observables associated with random Schrodinger operators on the lattice in the strong disorder regime. We prove that if the distribution of the random variables has a density analytic in a strip about the real axis, then these correlation functions are analytic functions of the energy outside of the planes corresponding to coincident energies. In particular, this implies the analyticity of the density of states, and of the current-current correlation function outside of the diagonal. Consequently, this proves that the current-current correlation function has an analytic density outside of the diagonal at strong disorder.
机译:我们研究了与在强无序状态下晶格上的随机薛定inger算子相关的可观察变量协变家族的高阶相关函数。我们证明,如果随机变量的分布在围绕实轴的条带中具有密度分析,则这些相关函数就是对应于一致能量的平面外能量的解析函数。特别地,这暗示了状态密度以及对角线外部的电流-电流相关函数的分析能力。因此,这证明了电流-电流相关函数在强无序状态下具有对角线以外的解析密度。

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