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<div name="messageBodySection" style="font-size: 14px; font-family: -apple-system, BlinkMacSystemFont, sans-serif;">Dear Paolo,
<div>thanks very much for the notes. </div>
<div>That’s exactly what I needed.</div>
<div>Best wishes,</div>
</div>
<div name="messageSignatureSection" style="font-size: 14px; font-family: -apple-system, BlinkMacSystemFont, sans-serif;"><br />
<span style="orphans: 2; widows: 2;">Lic. Miguel Carvajal - Instituto Balseiro - Bariloche</span>
<pre style="font-variant-ligatures: normal; orphans: 2; widows: 2;">[+54] 2944782429 (tel) / krvajal.miguel (skype)</pre>
<pre style="font-variant-ligatures: normal; orphans: 2; widows: 2;">LinkedIn: <a href="https://www.linkedin.com/in/krvajal/">in/krvajal</a><br /></pre></div>
<div name="messageReplySection" style="font-size: 14px; font-family: -apple-system, BlinkMacSystemFont, sans-serif;"><br />
On Nov 10, 2017, 16:34 -0300, Paolo Giannozzi <paolo.giannozzi@uniud.it>, wrote:<br />
<blockquote type="cite" style="margin: 5px 5px; padding-left: 10px; border-left: thin solid #1abc9c;">
<div dir="ltr">See attached notes - Paolo<br /></div>
<div class="gmail_extra"><br />
<div class="gmail_quote">On Fri, Nov 10, 2017 at 4:45 PM, Miguel Carvajal <span dir="ltr"><<a href="mailto:krvajal.miguelangel@gmail.com" target="_blank">krvajal.miguelangel@gmail.com</a>></span> wrote:<br />
<blockquote class="gmail_quote" style="margin: 5px 5px; padding-left: 10px; border-left: thin solid #e67e22;">
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<div name="messageBodySection" style="font-size:14px;font-family:-apple-system,BlinkMacSystemFont,sans-serif">Dear all,
<div>when representing the plane wave expansion of the KS orbital several conventions are found in the literature. Just wondering which one of the following is the one used in QE?</div>
<div><br /></div>
<div><b>1)</b></div>
<div>psi(r) = \sum C(G) e^{i G r)</div>
<div>C(G) = 1/Omega \sum psi(r) e^(-i Gr)</div>
<div><b>2) </b></div>
<div>
<div>psi(r) = 1/sqrt(Omega) \sum C(G) e^{i G r)</div>
<div>C(G) = 1/sqrt(Omega) \sum psi(r) e^(-i Gr)</div>
</div>
<div><br /></div>
<div>
<div><b>3)</b> </div>
<div>
<div>psi(r) = 1/Omega \sum C(G) e^{i G r)</div>
<div>C(G) = \sum psi(r) e^(-i Gr)</div>
</div>
</div>
<div><br /></div>
<div>I have omitted the k dependence for brevity reasons</div>
<div><br /></div>
<div>Best regards,</div>
</div>
<div name="messageSignatureSection" style="font-size:14px;font-family:-apple-system,BlinkMacSystemFont,sans-serif"><br />
<span>Lic. Miguel Carvajal - Instituto Balseiro - Bariloche</span>
<pre style="font-variant-ligatures:normal"><a href="tel:+54%20294%20478-2429" value="+542944782429" target="_blank">[+54] 2944782429</a> (tel) / krvajal.miguel (skype)</pre>
<pre style="font-variant-ligatures:normal">LinkedIn: <a href="https://www.linkedin.com/in/krvajal/" target="_blank">in/krvajal</a><br /></pre></div>
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<div dir="ltr">
<div>Paolo Giannozzi, <span>Dip. Scienze Matematiche Informatiche e Fisiche</span>,<br />
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br />
Phone +39-0432-558216, fax +39-0432-558222<br />
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