[Wien] Need your help please

[sikander Azam]

Dear all
I need the answer for the following question
I am using the Wien2k code to calculate the imaginary part of the complex
dielectric function   has certain limitations: the local field effects are
neglected, phonon contributions to the optical spectra band gap and
excitonic effects are not taken into account. But how i can comment the
accuracy (reasonability) of the obtained optical spectra.
with best regards
sikander
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