## Abstract In this paper we show that with the equivalent transformation **P**^__r__^ = (−1)^__P__^(**P**^σ^)^−1^ the spin function dependent methods such as Slater's method without group theory or Goddard's method with group theory differ only in different antisymmetric requirements from the pres
The symmetric groups and the Waller–Hartree spin-free method
✍ Scribed by T. K. Lim
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 270 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0020-7608
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✦ Synopsis
Abstract
The relations between the Waller–Hartree spin‐free method and the symmetric group theory are given. It is shown that the Gallup method is a special case of ours with S = M. Furthermore, all the irreducible representation matrices and other matrices needed are written explicitly in terms of Sanibel coefficients which makes the method more useful. However, it was shown that the cases with S ≠ M for the spin‐free pure spin states might be beyond the power of the symmetric group theory.
📜 SIMILAR VOLUMES
## Abstract Spin densities in the Waller–Hartree spin‐free method were found to be the same as in the spin‐projected Slater determinant method. The reduced spin projector **__Q__** is introduced and its relation with the spin projector **__P__** is discussed. An equation is obtained to show that a
## Abstract A many‐electron theory is developed for the determination of pure spin state wave‐functions and energies to avoid the difficulties in doing integration. The Waller–Hartree pure spin state wave‐functions are very convenient for this purpose. The required explicit formulas for the values
## Abstract The basic equivalent transformation **P**^σ^ = (−1)^__p__^ (**P**^__r__^)^−1^ as developed recently [6] is used to transform between the Young operators for a two‐row standard tableau and its conjugate two‐column standard tableau. These Young operators are shown to be the Löwdin spin pr