N ov 1 99 9 Exact properties of the chemical potential - density relation at finite temperature in the Hubbard model ∗
نویسنده
چکیده
We draw some rigorous conclusions about the functional properties of the μ − ρ relation in the Hubbard model based on symmetry considerations and unitary transformations. It is shown that the charge susceptibility reaches its local extreme at half-filling. Exact expressions are obtained in two limiting cases. PACS number(s): 75.10.Lp,71.20.Ad,74.65.+n,74.20.Mn
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تاریخ انتشار 2008