Problem 2.11 Show that the lowering operator cannot generate a state of infinite norm (i.e., f la.-²dx < equation). What does this tell you in the case y = vo? Hint: Use integration by parts to show that < 0o, if y itself is a normalized solution to the Schrödinger | (a-v)*(a_v) dx = v*(a,a_v)dx. 00 Then invoke the Schrödinger equation (Equation 2.46) to obtain 1. la-v* dx = E -ħw, 2 where E is the energy of the state y.
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