143 citations · 1k across the 32 of their papers we have counts for
3 papers · 1 filter
Self-consistent Dual Boson approach to single-particle and collective excitations in correlated systems
E. A. Stepanov, E. G. C. P. van Loon, A. A. Katanin +3
We propose an efficient dual boson scheme, which extends the DMFT paradigm to collective excitations in correlated systems. The theory is fully self-consistent both on the one- and…
Ultralong-range order in the Fermi-Hubbard model with long-range interactions
Erik G. C. P. van Loon, Mikhail I. Katsnelson, Mikhail Lemeshko
We use the dual boson approach to reveal the phase diagram of the Fermi-Hubbard model with long-range dipole-dipole interactions. By using a large-scale finite-temperature calculat…
Thermodynamic consistency of the charge response in dynamical mean-field based approaches
Erik G. C. P. van Loon, Hartmut Hafermann, Alexander I. Lichtenstein +1
We consider the thermodynamic consistency of the charge response function in the (extended) Hubbard model. In DMFT, thermodynamic consistency is preserved. We prove that the static…