Phase Separation in the Two-Dimensional Hubbard Model

Details Phase Separation in the Two-Dimensional Hubbard Model Phase Separation in the Two-Dimensional Hubbard Model

1996-09-17

arxiv.org/abs/cond-mat/9609152v1

Physics

Condensed Matter

4 pages, Revtex, no figure, Phys. Rev. B (Rapid Commun.)

Scientific paper

10.1103/PhysRevB.54.R8281

By making use of known exact results and symmetry properties for the one-band
Hubbard model, we show in a somewhat exact manner that there is no phase
separation on a square lattice at arbitrary fillings at finite temperature for
both attractive and repulsive on-site Coulomb interaction. This result is
consistent with the quantum Monto Carlo calculation.

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