Representation of the spin operator in the spin-free second quantized approach
β Scribed by A. Torre; L. Lain
- Book ID
- 114142761
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 319 KB
- Volume
- 426
- Category
- Article
- ISSN
- 0166-1280
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π SIMILAR VOLUMES
## Abstract The twoβparticle spatial density matrix components introduced by McWeeny are expressed in terms of the Fock coordinate wave function, which is constructed from an arbitrary function of __N__ spatial coordinates. The integral relations for these components are verified. The necessary mat
## Only pomt densI& are sampIed when matnx elements of a delta funclron operator are evaluated Thus, the Ferrm contact contnbution to nuclear spin-spin couphng tensors IS very senslhve IO local ma ccurac~es of the wavefunctloas An alternauve expresslon for the delta function wiuch uses a global re