The GW approximation in electronic structure theory has become a widespread tool for
predicting electronic excitations in chemical compounds and materials. In the realm of …

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 …

Efficient ab initio calculations of correlated materials at finite temperatures require compact
representations of the Green's functions both in imaginary time and in Matsubara frequency …

We review the electronic structure of nickelate superconductors with and without effects of
electronic correlations. As a minimal model, we identify the one-band Hubbard model for the …

Quantum computers hold promise to improve the efficiency of quantum simulations of
materials and to enable the investigation of systems and properties that are more complex …

We present quasiparticle (QP) energies from fully self-consistent GW (sc GW) calculations
for a set of prototypical semiconductors and insulators within the framework of the projector …

Coupled localized electron spins hosted by defects in semiconductors implement quantum
bits with the potential to revolutionize nanoscale sensors and quantum information …

We review many-body effects, their microscopic origin, as well as their impact on
thermoelectricity in correlated narrow-gap semiconductors. Members of this class—such as …

Due to the infinite summation of bubble diagrams, the GW approximation of Green's function
perturbation theory has proven particularly effective in the weak correlation regime, where …

The parquet formalism and Hedin's GW γ approach are unified into a single theory of vertex
corrections, corresponding to an exact reformulation of the parquet equations in terms of …