Approximate ground state of the Lipkin model hamiltonian in density-matrix formalism
β Scribed by M. Tohyama; P. Schuck; S. J. Wang
- Publisher
- Springer
- Year
- 1991
- Tongue
- English
- Weight
- 622 KB
- Volume
- 339
- Category
- Article
- ISSN
- 0939-7922
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Real and imaginary part of the self energy and the density of states are calculated in second order parhaily self consistent Green's functmn expansion. There appear upper and lower Hubbard bands and correlation states at the chemical potential.
## Abstract The electron density and spatial correlation as given by the MO, VB and AMO methods for H~2~ and H~6~ are studied by means of diagrams. For comparison, diagrams representing accurate wave functions for H~2~ are also given. The study of model functions representing localized bonds leads