The functional renormalization group (FRG), an established computational method for
quantum many-body phenomena, has been subject to a diversification in topical …

A simple yet paradigmatic model for the interplay of strong electronic correlations and
geometric frustration is the triangular lattice Hubbard model. Recently it was proposed that …

Quasicrystals lack translational symmetry, but can still exhibit long-range order, promoting
them to candidates for unconventional physics beyond the paradigm of crystals. Here, we …

We explore unconventional superconductivity of repulsive spinless fermions on square and
honeycomb lattices with staggered sublattice potentials. The two lattices can exhibit …

We recapitulate recent developments of the functional renormalization group (FRG)
approach to the steady state of systems out of thermal equilibrium. In particular, we discuss …

Using the Lindblad equation approach, we derive the range of the parameters of an
interacting one-dimensional electronic chain connected to two reservoirs in the large bias …

Describing the emergence of phases of condensed matter is one of the central challenges in
physics. For this purpose many numerical and analytical methods have been developed …

Density functional theory underlies the most successful and widely used numerical methods
for electronic structure prediction of solids. However, it has the fundamental shortcoming that …

We employ a novel, unbiased renormalization-group approach to investigate nonequilibrium
phase transitions in infinite lattice models. This allows us to address the delicate interplay of …

We describe an efficient approximation for the electron-electron interaction in the
determination of the low-energy effective interaction in multiband lattice systems. By using …