The physics of quantum materials is dictated by many-body interactions and mathematical
concepts such as symmetry and topology that have transformed our understanding of matter …

The last decade witnessed significant progress in angle-resolved photoemission
spectroscopy (ARPES) and its applications. Today, ARPES experiments with 2-meV energy …

Theoretical ideas and experimental results concerning high-temperature superconductors
are reviewed. Special emphasis is given to calculations performed with the help of …

This article reviews quantum cluster theories, a set of approximations for infinite lattice
models which treat correlations within the cluster explicitly, and correlations at longer length …

Although the vast majority of high-T c cuprate superconductors are hole-doped, a small
family of electron-doped compounds exists. Underinvestigated until recently, there has been …

Tunneling spectroscopy has played a central role in the experimental verification of the
microscopic theory of superconductivity in classical superconductors. Initial attempts to apply …

Electron Correlations in Molecules and Solids bridges the gap between quantum chemistry
and solid-state theory. In the first half of the text new concepts are developed for treating …

We present the full analysis of the normal state properties of the spin-fermion model near the
antiferromagnetic instability in two dimensions. The model describes low-energy fermions …

We show that the retarded interaction between quasiparticiles on a 2D square lattice
induced by the exchange of antiferromagnetic paramagnons leads uniquely to a transition to …

A new approach to the single-band Hubbard model is described in the general context of
many-body theories. It is based on enforcing conservation laws, the Pauli principle and a …