Hubbard operators in the theory of strongly correlated electrons
S. G. Ovchinnikov, V. V. Val'kov
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.
Categorias:
Ano:
2004
Editora:
World Scientific Publishing Company
Idioma:
english
Páginas:
254
ISBN 10:
186094597X
ISBN 13:
9781860945977
Arquivo:
PDF, 3.64 MB
IPFS:
,
english, 2004
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