Relevance of many-body interactions for correlated electrons in the strong-coupling limit
Relevance of many-body interactions for correlated electrons in the strong-coupling limit
Many-body interactions in effective field theories for disordered interacting electrons are considered. It is shown that three-body and higher interaction terms are generated in perturbation theory, and some of the physical consequences of these interactions are discussed. It is shown in particular that they will in general be important for …