An all-electron GW code based on full-potential linearized planewave (FP-LAPW) approach, currently interfaced with WIEN2k. Currently two versions are avialable.
An implementation of constrained random phase approximation (cRPA) using the LAPW basis, which is based on FHI-gap, in collaboration with Loig Vaugier and Silke Biermann
Loig Vaugier, Hong Jiang and Silke Biermann, Hubbard U and Hund's exchange J in transition metal oxides: screening vs localization tends from constrained random phase approximation, Phys. Rev. B 86, 165105(2012).
Hong Jiang, Ricardo I. Gomez-Abal, Xinzheng Li, Christian Meisenbichler, Claudia Ambrosch-Draxl, and Matthias Scheffler, FHI-gap: a GW code based on the All-electron augmented plane wave method, Computer Phys. Commun.,184, 348 (2013).
This is a successor to FHI-gap with significant reconstruction and optimization and several important new features.