The commutation relations among the angular momentum operators, Îx, Îy, Îz, and β, are distinctive and characteristic of all angular momentum systems. Define two new angular momentum operators as Î+ = Îx + iÎy Î_ = Îx – iÎy 2 (a) Write the operator product, ÎÎ_, in terms of 1² and Î₂. Note: 1² = Îx² + Îy² + +Î₂². (b) Evaluate the commutator, [[², Î+]. (L+ is shorthand for Îx ± ily.) (c) Evaluate the commutator, [ο‚α].
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