Gaussian-based O(N⁴) G₀W₀ codes for molecules and periodic systems implemented in PySCF
Reference:
All-electron Gaussian-based G₀W₀ for Valence and Core Excitation Energies of Periodic Systems, T. Zhu and G. K.-L. Chan, arXiv: 2007.03148 (2020)

Molecules:

• gw_ac.py: molecular G₀W₀ code using analytic continuation scheme
• gw_cd.py: molecular G₀W₀ code using contour deformation scheme
• ugw_ac.py: molecular spin-unrestricted G₀W₀ code using analytic continuation scheme

Solids:

• krgw_ac.py: PBC G₀W₀ code using analytic continuation scheme
• krgw_cd.py: PBC G₀W₀ code using contour deformation scheme
• kugw_ac.py: PBC spin-unrestricted G₀W₀ code using analytic continuation scheme