158 citations · 777 across the 35 of their papers we have counts for
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Assignment of excitonic insulators in \textit{ab initio} theories: the case of NiBr
Stefano Di Sabatino, Alejandro Molina-Sánchez, Pina Romaniello +1
In this work we perform a detailed first-principles analysis of the electronic and optical properties of NiBr within the state-of-the-art +BSE scheme to determine whether t…
Screened extended Koopmans' theorem: photoemission at weak and strong correlation
S. Di Sabatino, J. Koskelo, J. A. Berger +1
By introducing electron screening in the extended Koopmans' theorem we correctly describe the band gap opening in weakly as well as strongly correlated systems. We show this by app…
Static and Dynamic Bethe-Salpeter Equations in the -Matrix Approximation
Pierre-François Loos, Pina Romaniello
While the well-established approximation corresponds to a resummation of the direct ring diagrams and is particularly well suited for weakly-correlated systems, the -matrix…
Introducing screening in one-body density matrix functionals: impact on the Extended Koopmans' Theorem's charged excitations of model systems
S. Di Sabatino, J. Koskelo, J. A. Berger +1
In this work we get insight into the impact of reduced density matrix functionals on the quality of removal/addition energies obtained using the Extended Koopmans' Theorem (EKT). W…