VIII. Addition of Angular Momenta

It is easy to show that this is, in fact, an angular momentum (i.e. [J ˆ ˆ ˆ, J x y ]= i J z ). We can therefore associate two quantum numbers, j and m , with the eigenstates of total angular momentum indicating its magnitude and projection onto the z axis. The coupled basis states are eigenfunctions of the total angular momentum operator. This ................
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