Three Dimensional SRG Evolution of the NN Interactions Using Picard Iteration

The Similarity Renormalization Group (SRG) evolution of nucleon-nucleon ( NN ) interactions is calculated directly as function of momentum vectors for realistic potentials. To overcome the stiffness of the SRG flow equations in differential form for far off diagonal matrix elements, the differential equation is transformed to an integral form without employing a partial wave decomposition.