6 citations · 6 across the 1 of their papers we have counts for
5 papers
Random Phase Approximation for gapped systems: role of vertex corrections and applicability of the constrained random phase approximation
Erik G. C. P. van Loon, Malte Rösner, Mikhail I. Katsnelson +1
The many-body theory of interacting electrons poses an intrinsically difficult problem that requires simplifying assumptions. For the determination of electronic screening properti…
Downfolding approaches to electron-ion coupling: Constrained density-functional perturbation theory for molecules
Erik G. C. P. van Loon, Jan Berges, Tim O. Wehling
Constrained electronic-structure theories enable the construction of effective low-energy models consisting of partially dressed particles. However, the interpretation and physical…
Efficient fluctuation exchange approach to low-temperature spin fluctuations and superconductivity: from the Hubbard model to NaCoOHO
Niklas Witt, Erik G. C. P. van Loon, Takuya Nomoto +2
Superconductivity arises mostly at energy and temperature scales that are much smaller than the typical bare electronic energies. Since the computational effort of diagrammatic man…
Second-order dual fermion for multi-orbital systems
Erik G. C. P. van Loon
In dynamical mean-field theory, the correlations between electrons are assumed to be purely local. The dual fermion approach provides a systematic way of adding non-local correctio…
Bandwidth renormalization due to the intersite Coulomb interaction
Yann in 't Veld, Malte Schüler, Tim Wehling +2
The theory of correlated electrons is currently moving beyond the paradigmatic Hubbard , towards the investigation of intersite Coulomb interactions. Recent investigations have…