<DIV>Dear all:</DIV>
<DIV> Maybe this is a simple question for you. I'm dealing with a system without inversion symmetry, from the userguide I know I should add inversion, but I have no idea what is the difference when you add the inversion or not, and how much it influence the calculation? one more question is should the k-mesh be shifted?</DIV>
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<DIV>best regards </DIV><p>__________________________________________________<br>Do You Yahoo!?<br>Tired of spam? Yahoo! Mail has the best spam protection around <br>http://mail.yahoo.com