Reduced Hamiltonians. II: The size-consistency of reduced Hamiltonians defined in model spaces
β Scribed by Pascual Viciano; Josep Planelles
- Publisher
- Springer
- Year
- 1994
- Tongue
- English
- Weight
- 620 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0259-9791
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π SIMILAR VOLUMES
The properties of the spin-adapted reduced Hamiltonian SRH matrices and of their eigenvectors permit in many cases a projection of the two-electron matrices, which amounts to an effective truncation of the basis at the stage of the calculations which are time and as memory consuming. Besides this ef
The algorithm for evaluating the elements of the spin-adapted reduced ## Ε½ . Hamiltonian 2-SRH involves the whole basis set of molecular orbitals. However, under a specific condition, its eigenvectors are very sparse. These two properties lead us here to propose a projection of the 2-SRH matrix,
A dynamic model updating technique, force residual updating-interactive technique (FRU-IT), is described. The technique is based on minimisation of the force (input) residual. Like most parametric identification problems, dynamic model updating is affected strongly by measurement errors due to the i