Another one possible: https://en.wikipedia.org/wiki/GW_approximation
There are plenty of articles on this (for example: https://aip.scitation.org/doi/10.1063/1.4718428) and a good book, "Interacting Electrons: Theory and Computational Approaches" by Richard Martin et al.
Another one possible: https://en.wikipedia.org/wiki/GW_approximation
There are plenty of articles on this (for example: https://aip.scitation.org/doi/10.1063/1.4718428) and a good book, "Interacting Electrons: Theory and Computational Approaches" by Richard Martin et al.