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1. We use the classical definition p= m in the calculation of the expectation value of momentum, d{r) = m dt (p) (1) =| dry*(x, t)xp(x,t) (2) = m ( Ənb* (x, t) Əb(x, t) (p) = m dr ( rv(x,t) + v*(x, t)= (3) (a) Use the Schrödinger equation and its complex conjugate to show that (p) d.x (4) 2i (b) Simplify equation (4) and show that the momentum operator in position space is p = (5) i dr Take note that we require wave functions to vanish at infinity.
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Transcribed Image Text:1. We use the classical definition p= m in the calculation of the expectation value of momentum, d{r) = m dt (p) (1) =| dry*(x, t)xp(x,t) (2) = m ( Ənb* (x, t) Əb(x, t) (p) = m dr ( rv(x,t) + v*(x, t)= (3) (a) Use the Schrödinger equation and its complex conjugate to show that (p) d.x (4) 2i (b) Simplify equation (4) and show that the momentum operator in position space is p = (5) i dr Take note that we require wave functions to vanish at infinity.
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