462 citations · 7.1k across the 119 of their papers we have counts for
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Fluctuation diagnostics of the electron self-energy: Origin of the pseudogap physics
O. Gunnarsson, T. Schäfer, J. P. F. LeBlanc +5
We demonstrate how to identify which physical processes dominate the low-energy spectral functions of correlated electron systems. We obtain an unambiguous classification through a…
On the separability of dynamical and non-local correlations in three dimensions
T. Schäfer, A. Toschi, Jan M. Tomczak
While second-order phase transitions always cause strong non-local fluctuations, their effect on spectral properties crucially depends on the dimensionality. For the important case…
Dynamical Vertex Approximation
Karsten Held
Dynamical vertex approximation is a Feynman diagrammatic extension of dynamical mean field theory, including non-local correlations on all time and length scales. Starting with the…
Bands, resonances, edge singularities and excitons in core level spectroscopy investigated within the dynamical mean field theory
M. W. Haverkort, G. Sangiovanni, P. Hansmann +3
Using a recently developed impurity solver we exemplify how dynamical mean field theory captures band excitations, resonances, edge singularities and excitons in core level x-ray a…
Correlated starting points for the functional renormalization group
Nils Wentzell, Ciro Taranto, Andrey A. Katanin +2
We present a general frame to extend functional renormalization group (fRG) based computational schemes by using an exactly solvable interacting reference problem as starting point…
Dynamical vertex approximation in its parquet implementation: application to Hubbard nano-rings
A. Valli, T. Schäfer, P. Thunström +5
We have implemented the dynamical vertex approximation (DA) in its full parquet-based version to include spatial correlations on all length scales and in {\sl all} scattering ch…