113 citations · 317 across the 6 of their papers we have counts for
6 papers
NbCl: A Prototypical Layered Mott-Hubbard Insulator
Sergii Grytsiuk, Mikhail I. Katsnelson, Erik G. C. P. van Loon +1
The Hubbard model provides an idealized description of electronic correlations in solids. Despite its simplicity, the model features a competition between several different phases…
Conservation in two-particle self-consistent extensions of dynamical-mean-field-theory
F. Krien, E. G. C. P. van Loon, H. Hafermann +3
Extensions of dynamical-mean-field-theory (DMFT) make use of quantum impurity models as non-perturbative and exactly solvable reference systems which are essential to treat the str…
A comparison between methods of analytical continuation for bosonic functions
Johan Schött, Erik G. C. P. van Loon, Inka L. M. Locht +2
In this article we perform a critical assessment of different known methods for the analytical continuation of bosonic functions, namely the maximum entropy method, the non-negativ…
Beyond extended dynamical mean-field theory: Dual boson approach to the two-dimensional extended Hubbard model
Erik G. C. P. van Loon, Alexander I. Lichtenstein, Mikhail I. Katsnelson +2
The dual boson approach [Ann. Phys. 327, 1320 (2012)] provides a means to construct a diagrammatic expansion around the extended dynamical mean-field theory (EDMFT). In this paper,…
Collective Charge Excitations of Strongly Correlated Electrons, Vertex Corrections and Gauge Invariance
Hartmut Hafermann, Erik G. C. P. van Loon, Mikhail I. Katsnelson +2
We consider the collective, long-wavelength charge excitations in correlated media in presence of short- and long-range forces. As an example for the case of a short-range interact…
Plasmons in strongly correlated systems: spectral weight transfer and renormalized dispersion
E. G. C. P. van Loon, H. Hafermann, A. I. Lichtenstein +2
We study the charge-density dynamics within the two-dimensional extended Hubbard model in the presence of long-range Coulomb interaction across the metal-insulator transition point…