Corrector for the Ehrenfets equation

vendredi 27 juin 2014

1. The problem statement, all variables and given/known data



The potential V(x) in the equation

[itex]m\frac{d^2}{dt^2}=-\left \langle \frac{d\hat{V}}{dx} \right \rangle[/itex]

changes very slowly for the typical wavelength wavefunction. Calculate the lowest corrector for the classical equation of motion.



2. Relevant equations

The Ehrenfest Theorem

[itex]m\frac{d^2}{dt^2}=-\left \langle \frac{d\hat{V}}{dx} \right \rangle[/itex]



3. The attempt at a solution

I don't understand the question. I can't find in any book a mention of a corrector for the Ehrenfest equation. And what does it mean with the wavelentgh of the wavefunction?



Thank you for your time.





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