Angular momentum addition
= Angular momentum addition
Coupling two quantum angular momenta $j_1,j_2$ into total $j=|j_1-j_2|,\ldots,j_1+j_2$. Scalar products follow from $2\mathbf J_1\cdot\mathbf J_2=\mathbf J^2-\mathbf J_1^2-\mathbf J_2^2$.
= Angular momentum addition
Coupling two quantum angular momenta $j_1,j_2$ into total $j=|j_1-j_2|,\ldots,j_1+j_2$. Scalar products follow from $2\mathbf J_1\cdot\mathbf J_2=\mathbf J^2-\mathbf J_1^2-\mathbf J_2^2$.