Hubbard Operators in the Theory of Strongly Correlated Electrons || BACK MATTER

✍ Scribed by Ovchinnikov, S G; Val'kov, V V

• Book ID: 124049893
• Publisher: PUBLISHED BY IMPERIAL COLLEGE PRESS AND DISTRIBUTED BY WORLD SCIENTIFIC PUBLISHING CO.
• Year: 2004
• Tongue: English
• Weight: 131 KB
• Edition: 2
• Volume: 10.1142/p314
• Category: Article
• ISBN: 186094597X
• DOI: 10.1142/9781860945977_bmatter

✦ Synopsis

This book provides the first systematic discourse on a very peculiar approach to the theory of strongly correlated systems. Hubbard X-operators have been known for a long time but have not been widely used because of their awkward algebra. The book shows that it is possible to deal with X-operators even in the general multilevel local eigenstate system, and not just in the case of the nondegenerate Hubbard model. X-operators provide the natural language for describing quasiparticles in the Hubbard subbands with unusual doping and temperature-dependent band structures.The X-operator diagram technique is presented in detail, so that a newcomer with knowledge of the usual Fermi/Bose operator diagram technique can use the former after reading the book.Examples are taken from the theory of high-Tc superconductivity, rare-earth compounds with strong magnetic anisotropy and quantum oscillations in strongly correlated systems.