**Condensed Matter Theory**

**CMT Goettingen**

The condensed matter theory group works on a wide range of modern topics centered around correlated electrons, quantum magnetism, nanostructures and non-equilibrium dynamics. We employ various numerical methods like QMC, DMRG and ED, and analytical approaches like field theoretic methods and flow equations.

# Research group Prof. Stefan Kehrein

The main focus of research in the group of Stefan Kehrein is the non-equilibrium dynamics of quantum many-body systems. This has become a very active field of research in the past decade due to both experimental advances and new theoretical methods for dealing with non-equilibrium problems. Kehrein's group addresses a wide range of problems like thermalization, buildup of correlations, irreversibility and method development.

# Research group Prof. Fabian Heidrich-Meisner

Our group investigates quantum many-body systems using primarily numerical techniques. We are interested in the quantum phases of strongly correlated systems, their transport properties and nonequilibrium physics. Examples of experimental systems that motivate our work are strongly-correlated electron materials, nanoscopic systems, and ultracold atomic gases. Currently, our main activities focus on nonequilibrium dynamics, thermalization, many-body localization, electron-phonon coupled systems and topological states of matter in quantum many-body systems. The set of methods include exact diagonalization and matrix-product-state based approaches such as the density matrix renormalization group technique.