Real-time renormalization group and charge fluctuations in quantum dots |
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Authors: | Schoeller Konig |
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Institution: | Forschungszentrum Karlsruhe, Institut fur Nanotechnologie, 76021 Karlsruhe, Germany and Institut fur Theoretische Festkorperphysik, Universitat Karlsruhe, 76128 Karlsruhe, Germany. |
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Abstract: | 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. |
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