Abstract
Quarks are fermions with spin ½ and nucleons comprising three quarks should have a spin resulting from the addition of the spins of its constituents. Similarly, atoms made up of an electronic cortege of fermions with spin ½ (electrons) and a nucleus with Z protons and N neutrons, both fermions with spin ½, will have a total angular momentum resulting from the spins and orbital momenta of their constituents. It is therefore necessary to devise a simple method for adding angular momenta (this has been termed Racah algebra). We shall also be presenting together with the analytical method, the foundation of the Graphical Spin Algebra (GSA) used to considerably facilitate this type of computation
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© 1998 Springer-Verlag Berlin Heidelberg
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Elbaz, E. (1998). Addition Theorems. In: Quantum. Texts and Monographs in Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-60266-5_10
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DOI: https://doi.org/10.1007/978-3-642-60266-5_10
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-64327-9
Online ISBN: 978-3-642-60266-5
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