Computational quantum many-body theory

Welcome!

We develop numerical methods for studying quantum many-body problems and apply them to investigate various systems, such as

• strongly correlated electrons;

• mesoscopic and nanoscale quantum devices; and

• ultracold atoms in optical lattices.

We focus on two families of quantum many-body methods, namely

• tensor network methods, including numerical renormalization group (NRG), density matrix renormalization group (DMRG), and projected entangled pair states (PEPS); and

• dynamical mean-field theory (DMFT) and its nonlocal extensions.

For details, see our research highlights and publication list.