# [Pw_forum] the problem about eigndisplacement of phonon?

Tue Jun 6 16:32:45 CEST 2006

Dear stefano:
Thank you very much. i still am confused with the equations you give. i have three questions:
(1) \Phi U = M \omega^2 U
in this equation, what is the meaning of \Phi ?
(2) in fact,  what is printed in the matdyn is eigndisplacement. when i want eignvector, is M selected to be 207.2 amu. how to renormalize the eignvector?
please give me suggestions!

Regards

zhuzhenye

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Mp3疯狂搜-新歌热歌高速下
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