Exact bounds on the ground-state energy of the infinite-U Hubbard model

Details Exact bounds on the ground-state energy of the infinite-U Hubbard model Exact bounds on the ground-state energy of the infinite-U Hubbard model

2000-09-22

arxiv.org/abs/cond-mat/0009359v1

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages, 1 figure, to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.62.15277

We give upper and lower bounds for the ground-state energy of the infinite-U
Hubbard model. In two dimensions, using these bounds we are able to rule out
the possibility of phase separation between the undoped-insulating state and an
hole-rich state.

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