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arXiv · 0801.2893

Transport through correlated quantum dots: An investigation using the functional renormalization group

Michael Weyrauch·Dieter Sibold
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Abstract

Calculations using the (exact) fermionic functional renormalization group are usually truncated at the second order of the corresponding hierarchy of coupled ordinary differential equations. We present a method for the systematic determination of higher order vertex functions. This method is applied to a study of transport properties of various correlated quantum dot systems. It is shown that for large Coulomb correlations higher order vertex functions cannot be neglected, and a static approximation is insufficient.

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Michael Weyrauch, Dieter Sibold. 2008-01-18. Transport through correlated quantum dots: An investigation using the functional renormalization group. https://doi.org/10.1103/physrevb.77.125309

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