Energy versus dispersion in some many-body techniques
โ Scribed by V.I. Dimitrov; B. Slavov
- Book ID
- 103760147
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 729 KB
- Volume
- 480
- Category
- Article
- ISSN
- 0375-9474
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Many -body methods are applied to the singlet-triplet energy gap in :CHz in a variety of basis sets. The best result obtained with a coupledcluster method that includes effects of triple excitations is 10.1 kcal/mol in a basis set of 74 contxacted Gaussian orbit&. The best full fourth-order MBF
The properties of the self-energy of single-particle states in different many-body systems are studied as a function of the excitation energy | and of the temperature T of the system. Two cases are considered: the coupling to uncorrelated and to correlated particle-hole excitations.