[Wannier] about disentanglement

昱璋陳 creaman1986 at gmail.com
Thu Nov 14 18:50:43 CET 2013


Hello everyone
I have a little question about disentanglement which confused me for a
while.

After the disentanglement procedure ,the program will pick up
some appropriate states to construct Wannier function. So I suppose
"Eigenvalues inside optimal subspace" should be equal to some of  "Original
eigenvalues inside outer window" , but I found they are not equal.
So, is it ok to be "not equal"? if not, how can I reduce the error?

thanks
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