S. Yarlagadda et Gf. Giuliani, Screened interaction and self-energy in an infinitesimally polarized electron gas via the Kukkonen-Overhauser method, PHYS REV B, 61(19), 2000, pp. 12556-12559
The screened electron-electron interaction W-sigma,W-sigma' and the electro
n self-energy in an infinitesimally polarized electron gas are derived by e
xtending the approach of Kukkonen and Overhauser. Various quantities in the
expression for W-sigma,W-sigma' are identified in terms of the relevant re
sponse functions of the electron gas. The self-energy is obtained from W-si
gma,W-sigma' by making use of the GW method which in this case represents a
consistent approximation. Contact with previous calculations is made.