I do not quite understand how Brillouin goes from k\cdot \Delta (\log P) to -k\cdot \frac{p}{P_0} in this context:
from "Maxwell's Demon cannot operate: Information and Entropy", L. Brillouin, 1950.
Could anybody offer a meaningful explanation?
[I added the "The entropy decrease is...
As it's said, the number of k point in a first Brillouin zone is determined by the number of lattice sites. For exmaple, a 2-d n by m square lattice, its 1st BZ contains m by n k values and I assume these k values are equally separated.
My question is that how the layout of k point in the 1st...
I realize this a fundamental flaw in my understanding but I can't seem to get my head around it.
I understand that bragg reflection occurs at the zone boundary and so electron wavevectors are diffracted back into the 1st brillouin zone, but what is the justification for only considering the...