143 citations · 1k across the 32 of their papers we have counts for
4 papers · 1 filter
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…
Capturing non-local interaction effects in the Hubbard model: optimal mappings and limits of applicability
E. G. C. P. van Loon, M. Schüler, M. I. Katsnelson +1
We investigate the Peierls-Feynman-Bogoliubov variational principle to map Hubbard models with nonlocal interactions to effective models with only local interactions. We study the…
From local to non-local correlations: the Dual Boson perspective
E. A. Stepanov, A. Huber, E. G. C. P. van Loon +2
Extended dynamical mean-field theory (EDMFT) is insufficient to describe non-local effects in strongly correlated systems, since corrections to the mean-field solution are generall…
Double occupancy in DMFT and the Dual Boson approach
Erik G. C. P. van Loon, Friedrich Krien, Hartmut Hafermann +3
We discuss the calculation of the double occupancy using Dynamical Mean-Field Theory (DMFT) in finite dimensions. The double occupancy can be determined from the susceptibility of…