Hubbard operators in the theory of strongly correlated electrons [ BOOK ]

 

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Hubbard operators in the theory of strongly correlated electrons

S. G. Ovchinnikov, V. V. Val'kov

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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.

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Categories:

Mathematics - Operator Theory

Year:

2004

Publisher:

World Scientific Publishing Company

Language:

english

Pages:

254

ISBN 10:

1860944302

ISBN 13:

9781860945977

File:

PDF, 3.64 MB

 

https://b-ok.africa/dl/453953/292a53