Few-particle Green's functions for strongly correlated systems on infinite lattices

Details Few-particle Green's functions for strongly correlated systems on infinite lattices Few-particle Green's functions for strongly correlated systems on infinite lattices

2011-12-08

arxiv.org/abs/1112.1928v1

Phys. Rev. Lett. 107, 246403 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages with 4 figures + 7 pages with 2 figures of suppl. material

Scientific paper

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.

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