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Exploring approximations to the GW self-energy ionic gradients

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Figure

FIG. 1: Schematic representation of changes in the electronic structure under phonon distortion: a) in C 60 , the 3-fold LUMO levels (blue) split under a distortion (red) along a H g phonon mode
FIG. 3: Relative error of the different approximations with respect to the G 0 W 0 results for the electron-phonon coupling in graphene.
FIG. 4: Relative error of the different approximations with respect to the evGW results for the H g -related V ep of  equa-tion (1)

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