37 citations · 37 across the 1 of their papers we have counts for
6 papers
Generic optical excitations of correlated systems: -tons
Anna Kauch, Petra Pudleiner, Katharina Astleithner +3
The interaction of light with solids gives rise to new bosonic quasiparticles, with the exciton being---undoubtedly---the most famous of these polaritons. While excitons are the ge…
Parquet approximation for molecules: spectrum and optical conductivity of the Pariser-Parr-Pople model
Petra Pudleiner, Patrik Thunström, Angelo Valli +3
We study a simple model system for the conjugated -bonds in benzene, the Pariser-Parr-Pople (PPP) model, within the parquet approximation (PA), exemplifying the prospects of the…
A systematic study of the local minima in L(S)DA+U
Samara Keshavarz, Patrik Thunström
We have performed a systematic study of the emergence of meta-stable states in density functional theory plus Hubbard U (DFT+U ) simulations of NiO, CoO, FeO. Particular attention…
Analytical investigation of singularities in two-particle irreducible vertex functions of the Hubbard atom
Patrik Thunström, Olle Gunnarsson, Sergio Ciuchi +1
Two-particle generalized susceptibilities and their irreducible vertex functions play a prominent role in the quantum many-body theory for correlated electron systems. They act as…
Theory of -edge spectroscopy of strongly correlated systems
Johann Lüder, Johan Schött, Barbara Brena +6
X-ray absorption spectroscopy measured at the -edge of transition metals (TMs) is a powerful element-selective tool providing direct information about the correlation effects in…
Treatment of 4f states of the rare-earths: the case study of TbN
L. Peters, I. Di Marco, P. Thunström +3
The lattice constant, bulk modulus and shear constant of TbN are calculated by means of density functional theory (DFT) in the local density approximation (LDA) and generalized gra…