- #1
snoopies622
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I have a quantum harmonic oscillator at energy level [itex]n_1[/itex], and I want to know how much time will pass before it spontaneously drops to energy level [itex]n_2[/itex]. I know about the position operator, momentum operator, energy operator, and angular momentum operators. Is there a "time until a system changes from one state to another" operator?