Posted by Sean on March 15, 2013, 12:29 am
Going through the Debye model calculation, I'm not clear why (in the 3rd equation down on page 11 in the book) we use the one dimensional expectation of the energy, not the 3d result, which would introduce an extra factor of 3. I'm not sure whether it's because we use k as a vector, or because the 3 polarisations somehow account for the three dimensions, or some other reason?
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