Thanks.Axel.<br><br>I was wondering how to make perturbations for the ground state wavefunctions in the Phonon code.<br><br>Isn&#39;t it either by atomic displacement or electric field?<br><br><div class="gmail_quote">On Thu, Jan 12, 2012 at 9:41 AM, Axel Kohlmeyer <span dir="ltr">&lt;<a href="mailto:akohlmey@gmail.com">akohlmey@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">On Wed, Jan 11, 2012 at 8:56 PM, Caloma Trumica &lt;<a href="mailto:spmmal@gmail.com">spmmal@gmail.com</a>&gt; wrote:<br>

&gt; Dear All,<br>
&gt;<br>
&gt; I could not find the name of the subroutine, which applies a pattern of<br>
&gt; atomic displacements in order to get the wavefunction perturbation in any q<br>
&gt; vector? Could you please help me out? It is supposed to be hidden somewhere<br>
&gt; in &quot;PH&quot; folder.<br>
<br>
</div>if you compute perturbations,<br>
there are no displacements.<br>
that is the whole point.<br>
<br>
axel.<br>
<div class="im"><br>
<br>
&gt;<br>
&gt; Thanks.<br>
&gt;<br>
&gt; Andy Lau  Postgraduate student from HKUST, China<br>
&gt;<br>
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&gt;<br>
<span class="HOEnZb"><font color="#888888"><br>
<br>
<br>
--<br>
Dr. Axel Kohlmeyer<br>
<a href="mailto:akohlmey@gmail.com">akohlmey@gmail.com</a>  <a href="http://goo.gl/1wk0" target="_blank">http://goo.gl/1wk0</a><br>
<br>
College of Science and Technology<br>
Temple University, Philadelphia PA, USA.<br>
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