Our research is focussed on the numerical simulation of interacting many-particle systems composed of fermionic, bosonic, and spin degrees of freedom. We aim at a better understanding of a variety of phenomena, ranging from the entanglement in dissipative quantum systems, critical phenomena in Kondo systems, to heavy-fermion and Mott physics in lattice models of correlated electrons.
A very powerful method to investigate these phenomena is the numerical renormalization group, see Rev. Mod. Phys. 80, 395 (2008). Part of our research deals with improving this method and extending its range of applicability. Recent examples are the investigations of multi-impurity systems and real-space correlations in Kondo systems.
Our current research activities cover the following topics:
- real-space correlations and entanglement in Kondo systems
- Kondo effect in disordered systems
- Kondo effect in coupled quantum dots
- relation between classical and quantum impurity models
research supported by the Deutsche Forschungsgemeinschaft through
- Collaborative Research Center CRC1238
Control and Dynamics of Quantum Materials: Spin-orbit Coupling, Correlations, and Topology