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Evaluation of Hamiltonian two-body matrix elements

โœ Scribed by A. Etchegoyen; M.C. Etchegoyen; E.G. Vergini

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
294 KB
Volume
55
Category
Article
ISSN
0010-4655

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๐Ÿ“œ SIMILAR VOLUMES

The evaluation of vibronic coupling matr
The evaluation of vibronic coupling matrix elements
โœ Giorgio Orlandi ๐Ÿ“‚ Article ๐Ÿ“… 1976 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 426 KB

The lierzberg-Teller expansion over floating-orbital zero-order w&vefunctions is used to derive vibronic coupling iMegals. These arc shown to be eastly obtained by the use of standard semi-empirical hf0 methods.

Evaluation of overlap matrix elements by
Evaluation of overlap matrix elements by the transformation method (HEG)
โœ Karen E. Aiani; John S. Hutchinson ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 478 KB

A method is developed and tested for calculation of overlap matrix elements of the form ~g ( x) ~( x)), where 4~, is a one-dimensional oscillator eigenfunction calculated using the transformation method. The HEG approximation is used to write these integrals in terms of g(x~),where is an eigenvalue

Symmetry reduction of the matrix element
Symmetry reduction of the matrix elements of a two-particle operator
โœ Shi-Jun Zhong; Yin-Gui Wang; Qian-Er Zhang ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 674 KB

Local coordinate systems are chosen for each quadruple of atoms relative to a four-center integral, in order to avoid linear combinations of orbitals when symmetry operations perform on an orbital. This choice can utilize the complete molecular symmetry to attain the optimal number of symmetry-uniqu