Diagrammatic weak-coupling expansion for the magneto-polaron energy
β Scribed by E. A. Kochetov; H. Leschke; M. A. Smondyrev
- Book ID
- 112516302
- Publisher
- Springer
- Year
- 1992
- Tongue
- English
- Weight
- 836 KB
- Volume
- 89
- Category
- Article
- ISSN
- 1434-6036
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π SIMILAR VOLUMES
Pairing mediated by charge-transfer and magnetic fluctuations is examined for a two-component (d and p) Hubbard model in 2D with hopping (tnd),Short-range on-site (Ud,UD) and nearest-neighbor (Vc) repulsive interactions within (a) the randBm-phase approximation and (b) a strong coupling (tnd<E U d)
## Abstract Thirdβorder diagrammatic perturbation theory provides a simple and accurate description of the electronic structure of atoms and molecules beyond that afforded by independent electron models. The largest corrections to such treatments, the fourthβorder terms, are presented and discussed