Hubbard operators in the theory of strongly correlated electrons - Ovchinnikov, S. G., (Sergeĭ Gennadievich) (Imperial College Press, 2004)
Includes bibliographical references and index
Preface; PART 1; PART 2; References; Index
This book provides the first systematic discourse on a very peculiarapproach to the theory of strongly correlated systems. HubbardX-operators have been known for a long time but have not been widelyused because of their awkward algebra. The book shows that it ispossible to deal with X-operators even in the general multilevel localeigenstate system, and not just in the case of the nondegenerateHubbard model. X-operators provide the natural language for describingquasiparticles in the Hubbard subbands with unusual doping andtemperature-dependent band structures