Computer modeling of electronic correlations in solids

In the past few decades methods based on the mean-field approximation have been extremely successful in condensed matter physics. Although they allow an accurate description of a multitude of materials' properties, many physically and technologically interesting phenomena are inherently connected to correlated behavior of electrons, e.g. phase transitions, high-temperature superconductivity, metal-insulator transitions, or colossal magnetoresistance.

The aim of the talk is to present some applications of numerical many-body methods, namely the dynamical mean-field theory, to materials with strong electronic correlations. We will discuss in particular those effect, which cannot be described with traditional electronic structure methods, such as dynamically disorder local moments in paramagnetic phases or metal-insulator transition without long-range order.