A generating functional approach to the sd-model with strong correlations

• Published in: Condensed Matter Physics
• Date: 2005
• Main Authors: Izyumov, Yu.A., Chaschin, N.I., Alexeev, D.S.
• Format: Article
• Language: English
• Published: Інститут фізики конденсованих систем НАН України 2005
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/121055
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: A generating functional approach to the sd-model with strong correlations / Yu.A. Izyumov, N.I. Chaschin, D.S. Alexeev // Condensed Matter Physics. — 2005. — Т. 8, № 4(44). — С. 801–812. — Бібліогр.: 11 назв. — англ.

A Kadanoff-Baym-type generating functional approach, earlier developed by the authors to strongly correlated systems, is applied to the sd-model with strong sd-coupling. Formalism of the Hubbard X -operators was used, and equation for electron Green’s function was derived with functional derivati...