Show that (10.8.5) is correct by performing the average of the exchange energy (8.12.3) over all k.
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Show that (10.8.5) is correct by performing the average of the exchange energy (8.12.3) over all k.
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2/3 3 3 Exin = ²-Er = ² ( 323/12) EF 5 5 n²/3. (10.8.3)
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