Chen, WeiPasquarello, Alfredo2015-09-282015-09-282015-09-28201510.1103/PhysRevB.92.041115https://infoscience.epfl.ch/handle/20.500.14299/118905WOS:000358602200001We propose the use of an approximate bootstrap exchange-correlation kernel to account for vertex corrections in self-consistent GW calculations. We show that the approximate kernel gives accurate band gaps for a variety of extended systems, including simple sp semiconductors, wide band-gap insulators, and transition-metal compounds with either closed or open d shells. The accuracy is comparable with that obtained via the solution of the Bethe-Salpeter equation but only at a fraction of the computational cost.text::journal::journal article::research article