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Questions on the GW calculation


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  • From: barrazal@uiuc.edu
  • To: forum@abinit.org
  • Subject: Questions on the GW calculation
  • Date: Fri, 24 Mar 2006 16:08:41 +0100

Dear users, developers,
I am obtaining the gap for Si(100) along the direction defined by the bottom
of the dimmer trench.
Due to the size of the system and computational constraints, I can do a
calculation with 3 k-points as a limit. As I'd like to obtain a few more
points to trace a bandstructure, I considered obtaining the GW correction for
the 3 k-points, then shifting the lattice, and calculating everything (KSS,
SCR files)again. This method is very expensive, and I want to know if there
is another way to get the GW correction for points not included in the
original k-point mesh.

I also have the following question. I was told by one of the developers to
set the inclvkb variable to zero to speed up calculations. The program
accepts the variable but I'd like to find some documentation on its effect
(and meaning) on the calculation.


Thank you in advance for your comments,
Salvador.



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