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Companion problems in quasispin and isospin

Larry Zamick·Alberto Escuderos
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Abstract

We note that the same mathematical results apply to problems involving quasispin and isospin, but the problems per se are different. In the quasispin case, one deals with a system of identical fermions (e.g. neutrons) and address the problem of how many seniority conserving interactions there are. In the isospin case, one deals with a system of both neutrons and protons and the problem in question is the number of neutron-proton pairs with a given total angular momentum. Other companion problems are also discussed.

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Larry Zamick, Alberto Escuderos. 2004-11-10. Companion problems in quasispin and isospin. https://doi.org/10.1103/physrevc.71.014315

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