Real-time renormalization group and charge fluctuations in quantum dots
We develop a perturbative renormalization-group method in real time to describe nonequilibrium properties of discrete quantum systems coupled linearly to an environment. We include energy broadening and dissipation and develop a cutoff-independent formalism. We present quantitatively reliable results for the linear and nonlinear conductance in the mixed-valence and empty-orbital regime of the nonequilibrium Anderson impurity model with finite on-site Coulomb repulsion.
Schoeller
H
Forschungszentrum Karlsruhe, Institut fur Nanotechnologie, 76021 Karlsruhe, Germany and Institut fur Theoretische Festkorperphysik, Universitat Karlsruhe, 76128 Karlsruhe, Germany.
Konig
J