Green’s function formalism for highly correlated systems

• Published in: Condensed Matter Physics
• Date: 2006
• Main Authors: Mancini, F., Avella, A.
• Format: Article
• Language: English
• Published: Інститут фізики конденсованих систем НАН України 2006
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/121362
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Green’s function formalism for highly correlated systems / F. Mancini, A. Avella // Condensed Matter Physics. — 2006. — Т. 9, № 3(47). — С. 569–586. — Бібліогр.: 71 назв. — англ.

We present the Composite Operator Method (COM) as a modern approach to the study of strongly correlated electronic systems, based on the equation of motion and Green’s function method. COM uses propagators of composite operators as building blocks at the basis of approximate calculations and algeb...