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Orbital angular momentum

For $L_i=\varepsilon_{ik\ell}X_kP_\ell$ and $[X_i,P_j]=i\hbar\delta_{ij}$,
$$
[L_i,X_j]=i\hbar\varepsilon_{ijk}X_k,
\qquad
[L_i,P_j]=i\hbar\varepsilon_{ijk}P_k.
$$


Rotation commutators for orbital angular momentum

Past exam of the mathematics course of the University of Cambridge / 2025 / ii / Paper 4 / 33C / a / Solution

Rotation commutators for orbital angular momentum

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Rotation commutators for orbital angular momentum

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