Dear all, I would like ask 3 questions about epsilon.x run. 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)? 1.How can I have spin-orbit interaction in epsilon calculation? 3. How can I have GW aproximation in a epsilon calculation? I look forward to hearing form you, Regards, M. Pashangpour IIAU,Tehran,Iran.
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