We identify the precise hallmarks of the local magnetic moment formation and its Kondo
screening in the frequency structure of the generalized charge susceptibility. The sharpness …

We present and implement a parquet approximation within the dual-fermion formalism
based on a partial bosonization of the dual vertex function which substantially reduces the …

The localization-delocalization transition is at the heart of strong correlation physics.
Recently, there is great interest in multiorbital systems where this transition can be restricted …

We thoroughly analyze the divergences of the irreducible vertex functions occurring in the
charge channel of the half-filled Hubbard model in close proximity to the Mott metal-insulator …

By applying the Shiba map** on the two-particle level, we derive the relation between the
local four-point correlation functions of bipartite lattice models with on-site electronic …

While the breakdown of the perturbation expansion for the many-electron problem has
several formal consequences, here we unveil its physical effect: flip** the sign of the …

We study the microscopic mechanism controlling the interplay between local charge and
local spin fluctuations in correlated electron systems via a thorough investigation of the …

The physics of the triangular lattice Hubbard model exhibits a rich phenomenology, ranging
from a metal-insulator transition, intriguing thermodynamic behavior, and a putative spin …

We present a reformulation of the functional renormalization group (fRG) for many-electron
systems, which relies on the recently introduced single-boson exchange (SBE) …

We study the physics of high-temperature cuprate superconductors starting from the highly
degenerate four-site plaquette of the t− t′− U Hubbard model as a reference system. The …