158 citations · 777 across the 35 of their papers we have counts for
3 papers · 1 filter
Photoemission spectral functions from the three-body Green's function
Gabriele Riva, Timothée Audinet, Matthieu Vladaj +2
We present an original strategy for the calculation of direct and inverse photo-emission spectra from first principles. The main goal is to go beyond the standard Green's function…
Scrutinizing -based methods using the Hubbard dimer
Stefano Di Sabatino, Pierre-François Loos, Pina Romaniello
Using the simple (symmetric) Hubbard dimer, we analyze some important features of the approximation. We show that the problem of the existence of multiple quasiparticle soluti…
Photoemission spectra from the Extended Koopman's Theorem, revisited
S. Di Sabatino, J. Koskelo, J. Prodhon +3
The Extended Koopman's Theorem (EKT) provides a straightforward way to compute charged excitations from any level of theory. In this work we make the link with the many-body effect…