Strong electronic correlations pose one of the biggest challenges to solid state theory.
Recently developed methods that address this problem by starting with the local, eminently …

In the early 1970s, Wilson developed the concept of a fully nonperturbative renormalization
group transformation. When applied to the Kondo problem, this numerical renormalization …

The calculation of the electronic properties of materials is an important task of solid-state
theory, albeit particularly difficult if electronic correlations are strong, eg, in transition metals …

We develop a diagrammatic approach with local and nonlocal self-energy diagrams,
constructed from the local irreducible vertex. This approach includes the local correlations of …

A term first coined by Mott back in 1968 a “pseudogap” is the depletion of the electronic
density of states at the Fermi level, and pseudogaps have been observed in many systems …

Narrow band materials (transition metals and rare‐earth elements compounds) often reveal
anomalous physical properties. Their electronic structure is strongly renormalized by …

We use the dynamical vertex approximation (D Γ A) with a Moriyaesque λ correction for
studying the impact of antiferromagnetic fluctuations on the spectral function of the Hubbard …

We present a novel approach to long-range correlations beyond dynamical mean-field
theory, through a ladder approximation to dual fermions. The new technique is applied to the …

LDA+ DMFT, the merger of density functional theory in the local density approximation and
dynamical mean-field theory, has been mostly employed to calculate k-integrated spectra …

Theoretical methods that are accurate for both short-distance observables and long-
wavelength collective modes are still being developed for the Hubbard model. Here, we …