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Physics
Atomic and Condensed Matter
Taylor Series for Potential in Crystals
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[QUOTE="Avardia, post: 6167766, member: 655666"] Hi, I've been reading the passage attached below and from what I understand we are looking at a 1D chain of atoms and if anyone atom moves it changes the potential for surrounding atoms and cause a change in energy in the system so the total energy is dependent on all the positions of the atoms relative to their own equilibrium. So the passage goes on to back it up mathematically and I get stumped right form the start with why do we start off with a Taylor series expansion(T.S) to give us the potential for an atom and I know that each atom is separated by [B]a [/B]but why do we do the T.S about [B]r=a[/B]? [ATTACH type="full" alt="242296"]242296[/ATTACH] [/QUOTE]
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Taylor Series for Potential in Crystals
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