Here, we consider the central aspects that distinguish different many-body Green’s function theories of Coulomb interaction. You can find the paper from (open access, J. Phys.: Conf. Ser. 3017 012023 (2025)): https://iopscience.iop.org/article/10.1088/1742-6596/3017/1/012023/meta
New publication: "Beyond Born-Oppenheimer Green's function theories: absolute and relational"!
New publication entitled "Beyond Born-Oppenheimer Green's function theories: absolute and relational" () is now available.