Exact Results of Strongly Correlated Systems at Finite Temperature

Details Exact Results of Strongly Correlated Systems at Finite Temperature Exact Results of Strongly Correlated Systems at Finite Temperature

1999-02-09

arxiv.org/abs/cond-mat/9902113v2

Physics Letters A256, (1999):230.

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, no figures, LATEX, corrected some typos, to appear in Phys. Lett. A

Scientific paper

10.1016/S0375-9601(99)00169-3

Some rigorous conclusions of the Hubbard model, Kondo lattice model and periodic Anderson model at finite temperature are acquired employing the fluctuation-dissipation theorem and particle-hole transform. The main conclusion states that for the three models, the expectation value of ${\bf \tilde{S}}^2-{\bf \tilde{S}}^2_z$ will be of order $N_{\Lambda}$ at any finite temperature.

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