Someone has asked exactly the same question not long ago. Google it for more details.<div>Basically, you can not use Gamma only calculation.<br clear="all">----------------------------------------------------<br>Duy Le<br>

Postdoctoral Associate<br>Department of Physics<br>University of Central Florida.<br>Website: <a href="http://www.physics.ucf.edu/~dle" target="_blank">http://www.physics.ucf.edu/~dle</a><br>
<br><br><div class="gmail_quote">On Sun, Jul 22, 2012 at 8:14 AM, henry odhiambo <span dir="ltr"><<a href="mailto:henod2001@yahoo.com" target="_blank">henod2001@yahoo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<div> Gamma-point tricks<br></div></blockquote></div><br></div>