- #1

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Does it mean equation (3) in http://scienceworld.wolfram.com/physics/PositionOperator.html? (where I believe the matrix is in the ##|E_n>## basis)

- Thread starter Happiness
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- #1

- 673

- 28

Does it mean equation (3) in http://scienceworld.wolfram.com/physics/PositionOperator.html? (where I believe the matrix is in the ##|E_n>## basis)

- #2

blue_leaf77

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$$

\langle \mathbf{r'} | \hat{\mathbf{r}} | \mathbf{r''} \rangle= \mathbf{r'} \delta(\mathbf{r'}-\mathbf{r''})

$$

which vanishes for off-diagonal elements.

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