Sökning: "T-matrix screened interaction vertex function GW approximation Green function density functional theory gradient expansion order N method Physics Fysik"
Hittade 1 avhandling innehållade orden T-matrix screened interaction vertex function GW approximation Green function density functional theory gradient expansion order N method Physics Fysik.
1. First principles methods for electronic structure calculations of solids
Sammanfattning : A straightforward gradient expansion of the exchange energy of a perturbed electron gas is performed. Studied perturbations range from very weak to those that produce, e.g., a silicon-like band structure with a band gap. LÄS MER
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