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Abstract: The supersymmetry method for study of disordered systems is shortly reviewed.The discussion starts with a historical introduction followed by an explanationof the idea of using Grassmann anticommuting variables for investigatingdisordered metals. After that the nonlinear supermatrix $\sigma$-model isderived. Solution of several problems obtained with the help of the$\sigma$-model is presented. This includes the problem of the level statisticsin small metal grains, localization in wires and films, and Andersonmetal-insulator transition. Calculational schemes developed for studying theseproblems form the basis of subsequent applications of the supersymmetryapproach.



Autor: K.B. Efetov

Fuente: https://arxiv.org/







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