- #1
misterme09
- 18
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Homework Statement
At t=0, a given wavefunction is:
[tex]\left\langle\theta,\phi|\psi(0)\right\rangle = \frac{\imath}{\sqrt{2}}(Y_{1,1}+Y_{1,-1})[/tex]
Find [tex]\left\langle\theta,\phi|\psi(t)\right\rangle[/tex].
Homework Equations
[tex]\hat{U}(t)\left|\psi(0)\right\rangle = e^{-\imath\hat{H}t/\hbar}\left|\psi(t)\right\rangle[/tex]
[tex]
\hat{H}\left|\ E,l,m\right\rangle = E\left|\ E,l,m\right\rangle
[/tex]
[tex]
\hat{L^{2}}\left|\ E,l,m\right\rangle = l(l+1)\hbar^{2}\left|\ E,l,m\right\rangle
[/tex]
[tex]
\hat{L_{z}}\left|\ E,l,m\right\rangle = m\hbar\left|\ E,l,m\right\rangle
[/tex]
The Attempt at a Solution
I know that you can use the above operator to make time evolution of an energy eigenstate, but I can't figure out what energy to use for the two spherical harmonics in the given state at t=0.
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