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Two roles of relativistic spin operators

Daniel R. Terno
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Abstract

Operators that are associated with several important quantities, like angular momentum, play a double role: they are both generators of the symmetry group and ``observables.'' The analysis of different splittings of angular momentum into "spin" and "orbital" parts reveals the difference between these two roles. We also discuss a relation of different choices of spin observables to the violation of Bell inequalities.

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Daniel R. Terno. 2002-11-28. Two roles of relativistic spin operators. https://doi.org/10.1103/physreva.67.014102

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