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Double occupancy and magnetic susceptibility of the Anderson impurity model out of equilibrium

Dirks, Andreas ; Schmitt, S. ; Han, J. E. ; Anders, F. ; Werner, Philipp ; Pruschke, Thomas

In: EPL (Europhysics Letters), 2013, vol. 102, no. 3, p. 37011

We use different numerical approaches to calculate the double occupancy and magnetic susceptibility as a function of a bias voltage in an Anderson impurity model. Specifically, we compare results from the Matsubara voltage quantum Monte Carlo approach (MV-QMC), the scattering states numerical renormalization group (SNRG), and real-time quantum Monte Carlo (RT-QMC), covering Coulomb repulsions...