Momentum Distribution of the Hubbard Model

Дата и время публикации : 1998-09-08T03:51:17Z

Авторы публикации и институты :
Girish S. Setlur (IMSc., Chennai, India)

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 12 pages, LaTex, 2d case revised, new formula for field operator
Первичная категория: cond-mat.str-el

Все категории : cond-mat.str-el

Краткий обзор статьи: Using the recently perfected sea-boson method, we compute the momentum distribution of the one-band Hubbard model in one and two spatial dimensions. We compute the asymptotic features of the momentum distribution explicitly away from half filling for weak coupling in one and two dimensions. While the results are not exact by any means, they provide the exact asymptotics, namely they are able to reproduce the exponents obtained by Shulz in one dimension obtained using Bethe ansatz. The corresponding results in more than one dimension are therefore as believeable.

Category: Physics