Solution of an ac Kondo Model

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Abstract
An ac Kondo model is solved exactly by applying a canonical transformation and summing perturbation theory to all orders. For the entire frequency range, all harmonics of the current are computed, along with the differential conductance, the magnetization, and the magnetic susceptibility. For a special case we also include a time-varying magnetic field. From this solution we are able to extract experimental signatures of the Kondo effect based on the position of resonances, to relate the differential conductance and the magnetic susceptibility, and to observe interference effects in the case where both the voltage and the magnetic field are time dependent.