On the combined use of GW approximation and cumulant expansion in the calculations of quasiparticle spectra: The paradigm of Si valence bands

Since the earliest implementations of the various GW approximations and cumulant expansion in the calculations of quasiparticle propagators and spectra, several attempts have been made to combine the advantageous properties and results of these two theoretical approaches. While the GW-plus-cumulant...

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Bibliographic Details
Main Authors: Gumhalter, B, Kovač, V, Caruso, F, Lambert, H, Giustino, F
Format: Journal article
Published: American Physical Society 2016