40 citations · 234 across the 13 of their papers we have counts for
13 papers
Quantum approximate optimization algorithm for qudit systems
Yannick Deller, Sebastian Schmitt, Maciej Lewenstein +5
A frequent starting point of quantum computation platforms are two-state quantum systems, i.e., qubits. However, in the context of integer optimization problems, relevant to schedu…
Double Occupancy and Magnetic Susceptibility of the Anderson Impurity Model out of Equilibrium
A. Dirks, S. Schmitt, J. E. Han +3
We use different numerical approaches to calculate the double occupancy and mag- netic susceptibility as a function of a bias voltage in an Anderson impurity model. Specifically, w…
Extension of dynamical mean-field theory by inclusion of nonlocal two-site correlations with variable distance
Torben Jabben, Norbert Grewe, Sebastian Schmitt
We present a novel approximation scheme for the treatment of strongly correlated electrons in arbitrary crystal lattices. The approach extends the well-known dynamical mean field t…
Spectral properties of the two-impurity Anderson model with varying distance and various interactions
Torben Jabben, Norbert Grewe, Sebastian Schmitt
We present a novel approximation for two interacting magnetic impurities immersed into a noninteracting metallic host. The scheme is based on direct perturbation theory in the hybr…
Itinerant and local-moment magnetism in strongly correlated electron systems
Sebastian Schmitt, Norbert Grewe, Torben Jabben
Detailed analysis of the magnetic properties of the Hubbard model within dynamical mean-field theory (DMFT) is presented. Using a RPA-like decoupling of two-particle propagators we…
Kinks in the electronic dispersion of the Hubbard model away from half filling
Patrick Grete, Sebastian Schmitt, Carsten Raas +2
We study kinks in the electronic dispersion of a generic strongly correlated system by dynamic mean-field theory (DMFT). The focus is on doped systems away from particle-hole symme…