(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Use

[tex][H_{0},r_{j}]=\frac{i\hbar}{\mu}p_{j}[/tex]

for the Hydrogen atom (where the j's denote the jth components in Cartesian coordinates) to prove that

[tex]<n_{f},l_{f},m_{l,f}|p_{j}|n_{i},l_{i},m_{l,i}>=-i\mu\omega<n_{f},l_{f},m_{l,f}|r_{j}|n_{i},l_{i},m_{l,i}>[/tex]

2. Relevant equations

[tex][H_{0},r_{j}]=\frac{i\hbar}{\mu}p_{j}[/tex]

3. The attempt at a solution

I'm really at a loss on how to begin here. I don't see how I can use the commutator to prove this.

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# Homework Help: Question on the Hydrogen atom

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