Dear all, I have a quick question regarding the dielectric function's TDDFPT expressions of the imaginary (epsinlon_2)and real (epsilon_1) parts.
Is there an explicit dependence (inversely proportional to) on volume for epsilon_2 like in the Independent particle approximation (IPA)? What is the relationship between epsilon_2 (IPA) and epsilon_2 (TDDFPT)? Regards Adjunct professor Physics department Federal University of Rondonia Brazil
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