- #1
ProPatto16
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Homework Statement
i need to calculate the orbital angular momentum for 3D isotropic harmonic oscillator is the first excited state
The Attempt at a Solution
for the first excited state:
[tex]\psi_{100}=\left(\frac{4m^3\omega^3}{\pi\hbar^3}\right)^{3/4}\left(\frac{m\omega}{\pi\hbar}\right)^{1/4}\left(\frac{m\omega}{\pi\hbar}\right)^{1/4}r sin\theta cos\phi e^{-m\omega r^2/2\hbar}[/tex]
now as far as i can work out to find the angular momentum i need to apply this function to the spherical harmonics [itex]Y_{l,m_l}(\theta,\phi)[/itex]
but I am not sure what to try?
ive been floating around the web and can't find a single example of a solution to orbital angular moment of this type, all i can find are countless derivations.
what baffles me the most is how to get an eigenvalue for momentum of a multiple of [itex]\hbar[/itex] when multiplying those functions as there's no derivation and the only occurence of [itex]\hbar[/itex] is in the exponent.
in general to find the value of an observable i.e. momentum then i need to apply the wave function to the eigenfunctions of the observable i.e. momentum and solve for the eigenvalue, yes?
not quite sure how to approach this problem..
normally i would apply the wavefunction to the orbital angular momentum operators, but I've been told to apply it to the spherical harmonics.
thanks