Posted by Steve Simon on May 7, 2013, 9:43 am, in reply to "Re: Normal modes of diatomic chain"
Sorry, I didn't realize I left this un-answered!!
You could include such a factor if you wanted to, but you would get the same frequencies. Instead of having
A_1 e^{i k n a - i omega t}
and
A_2 e^{i k n a - i omega t}
You would have
A_1 e^{i k n a - i omega t}
and
A_2 e^{i k (n + 1/2) a - i omega t}
But this just amounts to redefining A_2 to include an additional phase of e^{ika/2}.
Message Thread
« Back to index