88 citations · 88 across the 1 of their papers we have counts for
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One-particle irreducible functional approach - a new route to diagrammatic extensions of DMFT
G. Rohringer, A. Toschi, H. Hafermann +3
We present an approach which is based on the one-particle irreducible (1PI) generating functional formalism and includes electronic correlations on all length-scales beyond the loc…
Dual Fermion Dynamical Cluster Approach for Strongly Correlated Systems
S. -X. Yang, H. Fotso, H. Hafermann +4
We have designed a new multi-scale approach for Strongly Correlated Systems by combining the Dynamical Cluster Approximation (DCA) and the recently introduced dual-fermion formalis…
Superperturbation theory on the real-axis
Christoph Jung, Aljoscha Wilhelm, Hartmut Hafermann +2
In this article we formulate the superperturbation theory for the Anderson impurity model on the real axis. The resulting impurity solver allows to evaluate dynamical quantities wi…