The β-expansion of the D=1 fermionic spinless Hubbard model off the half-filling regime

• Veröffentlicht in: Condensed Matter Physics
• Datum: 2015
• Hauptverfasser: Correa Silva, E.V., Thomaz, M.T., Rojas, O.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Інститут фізики конденсованих систем НАН України 2015
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/154206
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: The β-expansion of the D=1 fermionic spinless Hubbard model off the half-filling regime / E.V. Correa Silva, M.T. Thomaz, O. Rojas // Condensed Matter Physics. — 2015. — Т. 18, № 3. — С. 33003: 1–12. — Бібліогр.: 18 назв. — англ.

We obtain that when the spinless model is off the half-filling regime (μ ≠ V), the Helmholtz free energy (HFE) can be written as two β-expansions: one expansion comes from the half-filling configuration and another one that depends on the parameter x = μ - V. We show numerically that the chemical po...