For decades, frustrated quantum magnets have been a seed for scientific progress and
innovation in condensed matter. As much as the numerical tools for low-dimensional …

Numerous correlated electron systems exhibit a strongly scale-dependent behavior. Upon
lowering the energy scale, collective phenomena, bound states, and new effective degrees …

The density matrix renormalization group (DMRG) has become a powerful numerical
method that can be applied to low-dimensional strongly correlated fermionic and bosonic …

Quantum point contacts are narrow, one-dimensional constrictions usually patterned in a
two-dimensional electron system, for example by applying voltages to local gates. The linear …

Using a leading algorithmic implementation of the functional renormalization group (fRG) for
interacting fermions on two-dimensional lattices, we provide a detailed analysis of its …

We review recent progress in the theoretical description of correlation and quantum
fluctuation phenomena in charge transport through single molecules, quantum dots and …

We extend the concept of the functional renormalization for quantum many-body problems to
nonequilibrium situations. Using a suitable generating functional based on the Keldysh …

We investigate the effect of local Coulomb correlations on electronic transport through a
variety of coupled quantum dot systems connected to Fermi liquid leads. We use a functional …

We investigate several fundamental characteristics of the multiloop functional
renormalization group (mfRG) flow by hands of its application to a prototypical many …

Z 4 parafermions can be realized in a strongly interacting quantum spin Hall Josephson
junction or in a spin Hall Josephson junction strongly coupled to an impurity spin. In this …