Mesoscopic fluctuations of the single-particle Green's function at Anderson transitions with Coulomb interaction

Using the two-loop analysis and the background field method we demonstrate that the local pure scaling operators without derivatives in the Finkel'stein nonlinear sigma model can be constructed by straightforward generalization of the corresponding operators for the noninteracting case. These p...

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Published in:arXiv.org 2016-09
Main Authors: Repin, E V, Burmistrov, I S
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Language:English
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Field theory
Green's functions
Operators (mathematics)
Quantum theory
Scaling
Variation
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description Using the two-loop analysis and the background field method we demonstrate that the local pure scaling operators without derivatives in the Finkel'stein nonlinear sigma model can be constructed by straightforward generalization of the corresponding operators for the noninteracting case. These pure scaling operators demonstrate multifractal behavior and describe mesoscopic fluctuations of the single-particle Green's function. We determine anomalous dimensions of all such pure scaling operators in the interacting theory within the two-loop approximation.
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subjects Field theory
Green's functions
Operators (mathematics)
Quantum theory
Scaling
Variation
title Mesoscopic fluctuations of the single-particle Green's function at Anderson transitions with Coulomb interaction
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