Dear Quantum Espresso community!
I've found in the mailing list archive that "the dielectric constant computed by ph.x is the static (high-frequency) dielectric constant of the system (also referred as \epsilon_\infty in the literature) . One need to combine it with phonon results in order to compute \epsilon_0, the real static dielectric constant including also ionic polarization." As my aim is to calculate \epsilon_0, do I understand correctly that if I run a ph.x calculation with epsil=.true and trans=.false, the output will contain epsilon_\infty and if I run with epsil=.true and trans=.true, the output will contain \epsilon_0? Best regards, Anton Filanovich, Ural Federal University.
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