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Forums
Physics
Quantum Physics
What's the importance of the squared of the angular momentum?
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[QUOTE="PeterDonis, post: 6301375, member: 197831"] Because the different components of ##J## don't commute. So there is no set of states that is a complete set of eigenstates for both ##J^2## and ##J##. The best we can do is to find a complete set of eigenstates for both ##J^2## and one of the three components of ##J##, usually defined to be ##J_z## (i.e., we define our ##z## axis to point along this component of ##J##). [/QUOTE]
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Forums
Physics
Quantum Physics
What's the importance of the squared of the angular momentum?
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