Abstract
Abstract We describe electron transport through small metallic grains and quantum dots which show Coulomb blockade effects beyond the perturbative regime. For this purpose we study the real-time evolution of the reduced density matrix of the system. We present a diagrammatic expansion. Quantum fluctuations renormalize system parameters and lead to finite lifetime broadening in the gate-voltage-dependent differential conductance. For quantum dots, Kondo-like features arise.
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