A large repulsion between particles in a quantum system can lead to their localization, an
effect responsible for the Mott insulator phases in strongly correlated materials. In a system …

Mott insulators are paradigmatic examples of strongly correlated physics from which many
phases of quantum matter with hard-to-explain properties emerge. Extending the typical SU …

Symmetries play a crucial role in understanding phases of matter and the transitions
between them. Theoretical investigations of quantum models with SU (N) symmetry have …

We analyze two different fermionic systems that defy Mott localization showing a metallic
ground state at integer filling and very large Coulomb repulsion. The first is a multiorbital …

We present a dynamical mean-field study of dynamical susceptibilities in the two-band
Hubbard model. Varying the model parameters we analyze the two-particle excitations in the …

We show how the stability conditions for a system of interacting fermions that conventionally
involve variations of thermodynamic potentials can be rewritten in terms of one-and two …

We study multilevel fermions in an optical lattice described by the Hubbard model with on-
site SU (n)-symmetric interactions. We show that in an appropriate parameter regime this …

We investigate many-body properties of equally populated three-component fermions with
attractive three-body contact interaction in one dimension. A diagrammatic approach …

SU (N) Mott insulators have been proposed and/or realized in solid-state materials and with
ultracold atoms on optical lattices. We study the two-dimensional SU (N) antiferromagnets …

We generalize the formalism of the dynamical vertex approximation (D Γ A)—a
diagrammatic extension of the dynamical mean-field theory (DMFT)—to treat magnetically …