The GW plus cumulant method and plasmonic polarons: application to the homogeneous electron gas

We study the spectral function of the homogeneous electron gas using many-body perturbation theory and the cumulant expansion. We compute the angle-resolved spectral function based on the GW approximation and the “GW plus cumulant” approach. In agreement with previous studies, the GW spectral functi...

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Main Authors: Caruso, F, Giustino, F
格式: Journal article
出版: EDP Sciences 2016