Non-square tensor algebra and applications in the NMR of multiply connected spin systems: I

Autor: J.P.D. Martin, M.J. Prandolini, G.J. Bowden
Rok vydání: 1991
Předmět:
Zdroj: Molecular Physics. 74:985-998
ISSN: 1362-3028
0026-8976
DOI: 10.1080/00268979100102741
Popis: Several new results in the theory of angular momentum are presented, which have their origin in NMR experiments on multiply connected spin-systems. In particular, Fano's ‘rectangular’ unit spherical tensors are used to extend Racah tensor algebra to deal with ‘non-square’ matrices. The properties of ‘non-square commutation relationships’ are examined in some detail, and illustrated using a simple three coupled spin-1/2 system. It is shown that Racah algebra is a subset of that which applies to the Fano spherical tensors.
Databáze: OpenAIRE