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

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.

10 figures, accepted by Phys. Rev. B

References in corpus (4)

• Strongly correlated regimes in a double quantum-dot device
• Impurity and correlation effects on transport in one-dimensional quantum wires
• Unified description of correlations in double quantum dots
• Phase lapses in transmission through interacting two-level quantum dots

Cited by in corpus (2)

• A finite-frequency functional RG approach to the single impurity Anderson model
• The large system asymptotics of persistent currents in mesoscopic quantum rings