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arXiv 2004.00145math-phcond-mat.dis-nnmath.MP
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超对称簇展开及其对随机Schr dinger算子的应用

Supersymmetric Cluster Expansions and Applications to Random Schrödinger Operators

Luca Fresta

摘要:

我们研究离散随机薛定谔算子通过超对称形式。我们开发了一个集群扩展,收敛在强和弱的无序。我们证明了指数衰减的无序平均格林函数和平滑的局部状态密度无论是在弱无序和接近的未扰动谱的能量或在强无序和在任何能量。作为应用,我们建立了Lifshitz尾型估计的局域态密度,从而在弱无序的本地化。

英文摘要:

We study discrete random Schrödinger operators via the supersymmetric formalism. We develop a cluster expansion that converges at both strong and weak disorder. We prove the exponential decay of the disorder-averaged Green's function and the smoothness of the local density of states either at weak disorder and at energies in proximity of the unperturbed spectrum or at strong disorder and at any energy. As an application, we establish Lifshitz-tail-type estimates for the local density of states and thus localization at weak disorder.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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