<div dir="auto">Hi Mahdi,</div><div dir="auto">Not really. You can get the dielectric function in MHz-THz range from the (temporal) autocorrelation of dipole moment from an MD simulation, but the timescale is way beyond the reach of DFT, by several orders of magnitude.</div><div dir="auto">Best regards,</div><div dir="auto">Michal Krompiec, Merck KGaA </div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Dec 18, 2020 at 9:47 PM Mahdi Faghihnasiri <<a href="mailto:mahdi.faghihnasiri@gmail.com">mahdi.faghihnasiri@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif">Dear all,</div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">Is it possible to calculate the real and imaginary part of the dielectric function in the GHz region with DFT?<br>Can these calculations be done with QE code? Or does it require a special or complimentary approximation and method?</div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">Best regards,</div><div class="gmail_default" style="font-family:tahoma,sans-serif">Mahdi<br></div><div><div dir="ltr" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><span style="color:rgb(153,153,153)"><span style="font-family:verdana,sans-serif"><b><br></b></span></span></div><br></div></div></div></div></div></div></div></div></div>
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