<div dir="ltr">On Tue, Jun 12, 2018 at 3:31 PM, Roman Voronkov <span dir="ltr"><<a href="mailto:roman.a.voronkov@gmail.com" target="_blank">roman.a.voronkov@gmail.com</a>></span> wrote:<br><br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Can someone please explain the meaning of degauss in gaussian smearing case in PW code?<br>I mean is it sigma? Or sigma/2 ? Or what? <br>Or maybe someone can say what source code file should I check to find this information?</div></div></blockquote><div><br></div>Modules/wgauss.f90. For simple Gaussians (n=0), wgauss(x) = gauss_freq (x*sqrt(2) )= (1+erf(x))/2 and x = (e_i-e_F)/degauss, so the Gaussian broadening is exp[-(e_i-e_F)^2/degauss^2]. degauss is in Ry.<br><br></div><div class="gmail_quote">Paolo<br></div><div class="gmail_quote"><br> </div><br><br clear="all"><br>-- <br><div class="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></div>