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Homework Statement
Does anyone know what the formula is for the following:
<j m | S^2_+ |j m > = ?
Reference to equations in Sakurai would be helpful in deriving the relation. I would suspect 3.5.37 but what about the delta_j j' ?
Normally J_+*J_- is substituted as J^2 - J_z^2+hbarJ_zWell, [itex]\langle j,m|S^2_{-}|j,m\rangle=\langle j,m|(S^2_{-}|j,m\rangle)[/itex] and [itex]S^2_{-}|j,m\rangle=S_{-}(S_{-}|j,m\rangle)=[/itex]___?