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Hi

I want to find the commutator between the momentum operatorpand σ_{z}, the third Pauli spin matrix. I am not quite sure how to get started on this one. Can I get a push in the right direction?

For the record, I would say that it is zero since they act on different spaces. Is this correct?

Best regards,

Niles.

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# Homework Help: QM: Commutator

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