In quantum physics. What is the physical meaning of : 1- [P,X] 2-[H,XP]

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In quantum physics. What is the physical meaning of : 1- [P,X] 2-[H,XP]
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The commutator here is a canonical commutator. This signifies a fundamental relation between canonical conjugate quantities. The Commutator of two operators A, B is the operator C = [A, B] such that C = AB − BA. If two quantities commute, it signifies that these quantities can be measured simultaneously.

 

 

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