Functional RG for the Single Impurity Anderson Model

We present a functional Renormalization Group (fRG) approach to the Single Impurity Anderson Model at finite temperatures. Starting with the exact spectral function and interaction vertex of a small system (``core'') containing a correlated site, we switch on the hybridization with a non-interacting bath in the RG-flow and calculate spectra of the correlated site. Different truncations of the RG-flow-equations and choices of the core are compared and discussed. Furthermore we calculate the linear conductance as function of temperature and interaction strength.