Existence of Long-Range Order in Quasi-Two-Dimensional Hubbard Model
| dc.creator | Belkasri, A. | |
| dc.creator | Richard, J. L. | |
| dc.date | 1994-09-19 | |
| dc.date.accessioned | 2026-07-07T03:07:27Z | |
| dc.date.available | 2026-07-07T03:07:27Z | |
| dc.description | In recent work of Monthoux and Pines~[1] and also in Rice et {\sl al.}'s work~[2], quasi-averages like $\langle c_{k \uparrow} c_{- k \downarrow} \rangle$ were considered even in the case of a dimension less or equal two. But it is well known from the old work of Hohenberg~[3] that these quasi-averages are zero at $T \not= 0$ in case of 1 and 2 dimensions. In this communication we apply the result of Hohenberg to the Hubbard model and prove that in the case of quasi-two-dimension, the inequality of Bogoliubov is not in contradiction with having $\langle c_{k \uparrow} c_{- k \downarrow} \rangle \not= 0$ (at $T \not= 0$) even for a system of three layers. | |
| dc.description | 6 pages,CPT-94/P.3025,LaTex | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9409076 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9409076 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/27176 | |
| dc.subject | Condensed Matter | |
| dc.title | Existence of Long-Range Order in Quasi-Two-Dimensional Hubbard Model | |
| dc.type | text |