The Guertin generalization of Dirac theory for a free particle with half-integer spin is shown to be a unitary transformation of the Weaver-Hammer-Good description by explictly deriving the unitary connections for spin-$ between the two descriptions and the Foldy-Wouthuysen representation. Thus, the
Relativistic Hamiltonians for Chemistry: A Primer
β Scribed by Prof. Trond Saue
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 934 KB
- Volume
- 12
- Category
- Article
- ISSN
- 1439-4235
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π SIMILAR VOLUMES
A general procedure is presented for the derivation of property operators for electric and magnetic perturbations for Hamiltonians derived from the Dirac Hamiltonian by a partially block-diagonalizing unitary transformation. The procedure involves a regularized expansion in powers of p 2 /m 2 c 2 .
## Abstract Gadolinium is widely known by all practitioners of magnetic resonance imaging (MRI) but few appreciate the basic solution chemistry of this trivalent lanthanide ion. Given the recent linkage between gadolinium contrast agents and nephrogenic systemic fibrosis, some basic chemistry of th