462 citations · 7.1k across the 119 of their papers we have counts for
6 papers · 1 filter
Divergences of the irreducible vertex functions in correlated metallic systems: Insights from the Anderson Impurity Model
P. Chalupa, P. Gunacker, T. Schäfer +2
In this work, we analyze in detail the occurrence of divergences in the irreducible vertex functions for one of the fundamental models of many-body physics: the Anderson impurity m…
Complementary views on electron spectra: From Fluctuation Diagnostics to real space correlations
O. Gunnarsson, J. Merino, T. Schäfer +3
We study the relation between the microscopic properties of a many-body system and the electron spectra, experimentally accessible by photoemission. In a recent paper [Phys. Rev. L…
Local magnetic moments in iron and nickel at ambient and Earth's core conditions
A. Hausoel, M. Karolak, E. Sasioglu +5
Some Bravais lattices have a particular geometry that can slow down the motion of Bloch electrons by pre-localization due to the band-structure properties. Another known source of…
Diagrammatic routes to nonlocal correlations beyond dynamical mean field theory
G. Rohringer, H. Hafermann, A. Toschi +6
Strong electronic correlations pose one of the biggest challenges to solid state theory. We review recently developed methods that address this problem by starting with the local,…
Breakdown of traditional many-body theories for correlated electrons
O. Gunnarsson, G. Rohringer, T. Schäfer +2
Starting from the (Hubbard) model of an atom, we demonstrate that the uniqueness of the mapping from the interacting to the noninteracting Green's function, , is strongly…
Merging GW with DMFT and non-local correlations beyond
J. M. Tomczak, P. Liu, A. Toschi +2
We review recent developments in electronic structure calculations that go beyond state-of-the-art methods such as density functional theory (DFT) and dynamical mean field theory (…