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 correlation functions of quantum systems—central objects in quantum field theories—
are defined in high-dimensional space-time domains. Their numerical treatment thus suffers …

We review recent developments in electronic structure calculations that go beyond state-of-
the-art methods such as density functional theory (DFT) and dynamical mean field theory …

We present a formalism for strongly correlated electron systems which consists in a local
approximation of the dynamical three-leg interaction vertex. This vertex is self-consistently …

The dual boson approach [Rubtsov, Katsnelson, and Lichtenstein, Ann. Phys. 327, 1320
(2012) APNYA6 0003-4916 10.1016/j. aop. 2012.01. 002] provides a means to construct a …

Using the dynamical mean-field theory (DMFT) as a “booster rocket”, the functional
renormalization group (fRG) can be upgraded from a weak-coupling method to a powerful …

The dual-fermion approach offers a way to perform diagrammatic expansion around the
dynamical mean field theory. Using this formalism, the influence of antiferromagnetic …

Electron correlations play a dominant role in the charge dynamics of the cuprates. We use
resonant inelastic X-ray scattering (RIXS) to track the do** dependence of the collective …

We study the magnetic susceptibility in the normal state of Sr 2 RuO 4 using dynamical
mean-field theory including dynamical vertex corrections. Besides the well-known …