New functional representation for Hubbard model, coherent state and tower of algebras

Details New functional representation for Hubbard model, coherent state and tower of algebras New functional representation for Hubbard model, coherent state and tower of algebras

1996-12-03

arxiv.org/abs/cond-mat/9612033v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, LaTeX 2.09, A talk given at the 5th International Conference on the Path Integrals from mev to MeV, PI-96, Dubna, May

Scientific paper

New functional representation for the strongly interacting systems is proposed which contains a new type of the quantum coherent state. As a result the new algebraic structure- so called "tower of algebras" appears which gives the tower (or hierarchy) of models. Generalization of Gutzwiller approximation in theory of metal-insulator phase transition is obtained. It is shown that the deformation parameters may be relevant to the order parameters in the physics of strongly correlated systems.

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