<div dir="ltr"><div>Keywords don't have to be necessarily different (but they have to be non-conflicting): "pb0x" labels both the exchange part and the gradient correction to exchange in PBE0. The original logic for labelling XC functionals allowed to use many different functionals, but it has gone out of control as the number of different XC functionals has exploded.<br><br></div><div>Paolo<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Aug 28, 2018 at 11:13 AM, Azadi, Sam <span dir="ltr"><<a href="mailto:s.azadi@imperial.ac.uk" target="_blank">s.azadi@imperial.ac.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi, <br>
<br>
According to “funct.f90” there are two descriptions (exchange and gradient correction on exchange) for pb0x keyword: <br>
<br>
"pb0x" (Slater*0.75+HF*0.25) iexch=6 <br>
"pb0x" PBE0 (PBE exchange*0.75) igcx =8<br>
<br>
don't they have to be different?<br>
<br>
Best, <br>
Sam <br>
<br>
———<br>
Sam Azadi<br>
Imperial College London <br>
<br>
<br>
<br>
<br>
<br>
______________________________<wbr>_________________<br>
users mailing list<br>
<a href="mailto:users@lists.quantum-espresso.org">users@lists.quantum-espresso.<wbr>org</a><br>
<a href="https://lists.quantum-espresso.org/mailman/listinfo/users" rel="noreferrer" target="_blank">https://lists.quantum-<wbr>espresso.org/mailman/listinfo/<wbr>users</a></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,<br>Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br>Phone +39-0432-558216, fax +39-0432-558222<br><br></div></div></div></div></div>
</div>