A supersymmetric mean-field approach to the infinite-U Hubbard model

Дата и время публикации : 2000-09-21T05:07:26Z

Авторы публикации и институты :
V. Yu. Irkhin
A. A. Katanin

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: RevTeX, 12 pages
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: A generalized supersymmetric representation of the Hubbard operator algebra is considered. This representation is applied to the infinite-U Hubbard model. A mean-field theory which takes into account both on-site and inter-site virtual boson-fermion transitions is developed. Unlike previous approaches, the mean-field theory considered is free from divergences. Possible application of these results to the ferromagnet-paramagnet transition, as well as to other problems is discussed.

Category: Physics