Variational Approach to the Calculation of the Dielectric Function of an Electron Gas: Exchange and Collisions
Abstract
In a recent work of Woo and Jha, the exchange correlations in a uniform electron gas were calculated. They ignored the Coulomb correlations completely. To describe the physical properties of an electron gas at metallic densities, we propose a variational method to calculate the dielectric function which takes into account the local-field corrections due to both Coulomb and exchange holes.
- Publication:
-
Physical Review B
- Pub Date:
- August 1971
- DOI:
- 10.1103/PhysRevB.4.1005
- Bibcode:
- 1971PhRvB...4.1005J