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Showing 1 to 1 of 1 for “"dual fermions"”.
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Two-particle level diagrammatic approaches for strongly correlated systems
… of the parquet formalism, we explored the dual fermion approach introduced by Rubtsov et al. Here, we extended the formalism to the Dynamical Cluster Approximation, in the process introducing a small parameter in the dual fermions perturbation theory. We demonstrate the quality of the …