We apply a nonequilibrium version of the functional renormalization group [1] to the problem of transport through the single impurity Anderson model at finite bias voltage, temperature and magnetic field. Apart from the flow of the self-energy we investigate the flow of the frequency dependent two-particle vertex. [1] S.G. Jacobs, V. Meden, H. Schoeller, Phys. Rev. Lett. 99, 150603 (2007). |
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