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Phase Separation in the Two-Dimensional Hubbard Model

Gang Su
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Abstract

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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Gang Su. 1996-09-17. Phase Separation in the Two-Dimensional Hubbard Model. https://doi.org/10.1103/physrevb.54.r8281

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