[Pw_forum] irreducible representations

[xirainbow]

Dear eli:
"*E*" means it is a double-degenerate mode.
"*u*" means it is antisymmetry under inversion operation.
You will find more information in books about "lattice dynamics"

On Sun, Jun 20, 2010 at 8:33 PM, eli <elahe_afrodit at yahoo.com> wrote:

> dear all
> in phonon calculation in  output of ph.x, what is irreducible
> representations? "for example 2 modes -E-2u"
> Elahe Teimouri
> Computational Condensed Matter Research Lab
> Physics Department, Isfahan University of Technology, Isfahan, Iran
>
>
____________________________________
Hui Wang
School of physics, Nankai University, Tianjin, China
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.quantum-espresso.org/pipermail/users/attachments/20100620/c1388152/attachment.html>