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An impurity solver for the dynamical mean field (DMFT) study of the Mottinsulators is proposed, which is based on the second order perturbation of thehybridization function. After carefully benchmarking it with Quantum MonteCarlo results on the anti-ferromagnetic phase of the Hubbard model, we concludethat this impurity solver can capture the main physical features in the strongcoupling regime and can be a very useful tool for the LDA+DMFT studies of theMott insulators with long range order.

Fast Impurity Solver for Dynamical Mean Field Theory based on second order perturbation around the atomic limit