Quantum Mechanics: Concepts and Applications · Problem 5.5

Three-Dimensional Problems — Nouredine Zettili

Physics — Quantum Mechanics · angular-momentum-dot-products

Problem

Prove the following two relations:

\hat{\vec{R}} \cdot \hat{\vec{L}} = 0

and

\hat{\vec{P}} \cdot \hat{\vec{L}} = 0