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 …

The Hubbard model represents the fundamental model for interacting quantum systems and
electronic correlations. Using the two-dimensional half-filled Hubbard model at weak …

The design of correlated materials challenges researchers to combine the maturing, high
throughput framework of DFT-based materials design with the rapidly-developing first …

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

We investigate several fundamental characteristics of the multiloop functional
renormalization group (mfRG) flow by hands of its application to a prototypical many …

Three-particle correlators are relevant for, among others, Raman, Hall, and nonlinear
responses. They are also required for the next order of approximations extending dynamical …

We present a dynamical mean-field study of dynamical susceptibilities in the two-band
Hubbard model. Varying the model parameters we analyze the two-particle excitations in the …

We consider the extended Hubbard model and introduce a corresponding Heisenberg-like
problem written in terms of spin operators. The derived formalism is reminiscent of …

Taking the competition and the mutual screening of various bosonic fluctuations in
correlated electron systems into account requires an unbiased approach to the many-body …

Nonlocal correlations play an essential role in correlated electron systems, especially in the
vicinity of phase transitions and crossovers, where two-particle correlation functions display …