- #1

dyn

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For an infinite well , solving the Schrodinger equation gives wavefunctions of the form sin(nπx/L). These are not eigenfunctions of the momentum operator which means there are no eigenvalues of the momentum operator. Does this mean momentum cannot be measured ?

Inside the infinite well the Hamiltonian is p

^{2}/(2m) ; this commutes with p so that should mean that momentum and energy share common eigenfunctions but as i stated above there are no momentum eigenfunctions. Where am i going wrong ?

Thanks