[Pw_forum] ACOUSTIC SUM RULES

[mayank gupta]

Dear Users

Real space force constant calculations (q2r.x) and calculation of
phonon frequencies  (matdyn.x), we have to select acoustic sum rule
(ASR).  there are various type of sum rule,which sum rule should be
use (ACOUSTIC/CRYSTAL)  and in q2r.x and matdyn.x calculations the ASR
should be same or they can be different.

-- 
Mayank

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