Electronic excitations: density-functional versus many-body Green's-function approaches

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The Properties of Hydrogen and Helium Under Extreme Conditions (2011, neutral): “An alternative to hybrid functionals are many-body Green’s function techniques, e.g. the “GW” approximation (Fiolhais et al., 2003; Onida et al., 2002), which has been applied to hydrogen with encouraging results (Chacham and Louie, 1991; Chacham et al., 1992).”
VASPKIT: A user-friendly interface facilitating high-throughput computing and analysis using VASP code (2019, methodology): “It could be expected that the GW-BSE calculated optical properties yield better agreement with experiment.”
The physical and chemical properties of heteronanotubes (2010, background): “The nanotubes reviewed here are among these systems and are an ideal matter of study with this technique, but it is necessary to include local field effects Onida et al., 2002 for a correct approximation.”
Silicon Nanocrystals: Fundamental Theory and Implications for Stimulated Emission (2008, background): “The correct description of such a structure requires first-principles calculations [123, 129–136].”