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10 lines
317 B
Plaintext
10 lines
317 B
Plaintext
Compatible Observables occur when commutator is equal to 0.
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[Â,B̂] = ÂB̂ - B̂Â
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Constant of Motion
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if d/dt  = 0 and [Ĥ,Â] = 0, where Ĥ is the Hamiltonian operator.
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then  is a constant of motion
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Thm: Two operators such that [Â,B̂] always have common Eigenstates |