title: Few-particle Green's functions for strongly correlated systems on infinite lattices.
abstract: We show how few-particle Green's functions can be calculated efficiently for models with nearest-neighbor hopping, for infinite lattices in any dimension. As an example, for one-dimensional spinless fermions with both nearest-neighbor and second-nearest-neighbor interactions, we investigate the ground states for up to 5 fermions. This allows us not only to find the stability region of various bound complexes, but also to infer the phase diagram at small but finite concentrations.
authors.affiliation: Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, Canada, V6T 1Z1.
authors.forename: Mona
authors.initials: M
authors.lastname: Berciu