A one-dimensional harmonic oscillator has energy eigenfunctions un(a) with n = 0, 1, 2,... The momentum operator, p, can
Posted: Wed Jun 08, 2022 11:55 am
A one-dimensional harmonic oscillator has energy eigenfunctions un(a) with n = 0, 1, 2,... The momentum operator, p, can be expressed as Pr ·(Â-¹), A √2a where the lowering operator is  and the raising operator is ¹. (a) By using the properties of the lowering and raising operators, A and A¹ (or otherwise) show that (p₂) = 0 in the state (7). (b) Given that h² · 2º² (¹ + ¹ —  – ¹¹'), - where a is a constant, calculate (p2) in the state (r).