Editorial: Challenges and solutions in GW calculations for complex systems

We report key advances in the area of GW calculations, review the available software implementations and define standardization criteria to render the comparison between GW calculations from different codes meaningful, and identify future major challenges in the area of quasiparticle calculations. This Topical Issue should be a reference point for further developments in the field. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2012