34 citations · 71 across the 4 of their papers we have counts for
4 papers
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…
Optical spectra of 2D monolayers from time-dependent density functional theory
Stefano Di Sabatino, J. A. Berger, Pina Romaniello
The optical spectra of two-dimensional (2D) periodic systems provide a challenge for time-dependent density-functional theory (TDDFT) because of the large excitonic effects in thes…
Diagonal Padé Approximant of the one-body Green's function, a study on Hubbard rings
Walter Tarantino, Stefano Di Sabatino
Padé approximants to the many-body Green's function can be built by rearranging terms of its perturbative expansion. The hypothesis that the best use of a finite number of terms of…
Cubic BN optical gap and intragap optically active defects
Anna Tararan, Stefano di Sabatino, Matteo Gatti +6
We report a comprehensive study on the optical properties of cubic boron nitride (c-BN) and its optically active defects. Using electron energy-loss spectroscopy (EELS) within a mo…