<div>Dear all,</div>
<div>I would like ask 3 questions about epsilon.x run.</div>
<div>
<div>1. How can I find Im part of epsilon after offdigonal calculation of epsilon (I can obtain dielectric function tensor but how can I compaire the results with experimental results)?</div>1.How can I have spin-orbit interaction in epsilon calculation?</div>
<div>3. How can I have GW aproximation in a epsilon calculation?</div>
<div>I look forward to hearing form you,</div>
<div>Regards,</div>
<div>M. Pashangpour</div>
<div>IIAU,Tehran,Iran.</div>