The Role of the Exchange Interaction in the One-Dimensional $n$-Component Hubbard Model
| dc.creator | Szirmai, E. | |
| dc.creator | Legeza, Ö. | |
| dc.creator | Sólyom, J. | |
| dc.date | 2008-05-07 | |
| dc.date.accessioned | 2026-07-07T09:37:35Z | |
| dc.date.available | 2026-07-07T09:37:35Z | |
| dc.description | The commensurate $p/q$-filled $n$-component Hubbard chain was investigated by bosonization and high-precision density-matrix renormalization-group analysis. It was found that depending on the relation between the number of components $n$, and the filling parameter $q$, the system shows metallic or insulating behavior, and for special fillings bond-ordered (dimerized, trimerized, tetramerized etc.) ground state develops in the insulating phase. A mean-field analysis shows that this bond ordering is a direct consequence of the spin-exchange interaction, which plays a crucial role in the one-parameter Hubbard model -- not only for infinite Coulomb repulsion, but for intermediate values as well. | |
| dc.description | 3 pages | |
| dc.identifier | https://arxiv.org/abs/0805.0982 | |
| dc.identifier | http://arxiv.org/abs/0805.0982 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/160505 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | The Role of the Exchange Interaction in the One-Dimensional $n$-Component Hubbard Model | |
| dc.type | text |