158 citations · 777 across the 35 of their papers we have counts for
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Pina Romaniello, Friedhelm Bechstedt, Lucia Reining
In many-body perturbation theory (MBPT) the self-energy Σ=iGWΓplays the key role since it contains all the many body effects of the system. The exact self-energy is not known; as f…