154 citations · 2k across the 70 of their papers we have counts for
6 papers · 1 filter
Emission characteristics of laser-driven dissipative coupled-cavity systems
Michael Knap, Enrico Arrigoni, Wolfgang von der Linden +1
We consider a laser-driven and dissipative system of two coupled cavities with Jaynes-Cummings nonlinearity. In particular, we investigate both incoherent and coherent laser drivin…
Variational cluster approach for strongly correlated lattice bosons in the superfluid phase
Michael Knap, Enrico Arrigoni, Wolfgang von der Linden
We extend the variational cluster approach to deal with strongly correlated lattice bosons in the superfluid phase. To this end, we reformulate the approach within a pseudoparticle…
The 3-Band Hubbard-Model versus the 1-Band Model for the high-Tc Cuprates: Pairing Dynamics, Superconductivity and the Ground-State Phase Diagram
W. Hanke, M. L. Kiesel, M. Aichhorn +2
One central challenge in high- superconductivity (SC) is to derive a detailed understanding for the specific role of the - and - orbital degrees o…
Excitations in disordered bosonic optical lattices
Michael Knap, Enrico Arrigoni, Wolfgang von der Linden
Spectral excitations of ultracold gases of bosonic atoms trapped in one dimensional optical lattices with disorder are investigated by means of the variational cluster approach app…
Quantum phase transition and excitations of the Tavis-Cummings lattice model
Michael Knap, Enrico Arrigoni, Wolfgang von der Linden
The enormous progress in controlling quantum optical and atomic systems has prompted ideas for new experimental realizations of strongly correlated many-body systems operating with…
Benchmarking the variational cluster approach by means of the one-dimensional Bose-Hubbard model
Michael Knap, Enrico Arrigoni, Wolfgang von der Linden
Convergence properties of the variational cluster approach with respect to the variational parameter space, cluster size, and boundary conditions of the reference system are invest…