Systematic Mapping of the Hubbard Model to the Generalized t-J Model
| dc.creator | Reischl, Alexander | |
| dc.creator | Müller-Hartmann, Erwin | |
| dc.creator | Uhrig, Götz S. | |
| dc.date | 2004-01-05 | |
| dc.date | 2005-01-04 | |
| dc.date.accessioned | 2026-07-07T02:55:43Z | |
| dc.date.available | 2026-07-07T02:55:43Z | |
| dc.description | The generalized t-J model conserving the number of double occupancies is constructed from the Hubbard model at and in the vicinity of half-filling at strong coupling. The construction is realized by a self-similar continuous unitary transformation. The flow equation is closed by a truncation scheme based on the spatial range of processes. We analyze the conditions under which the t-J model can be set up and we find that it can only be defined for sufficiently large interaction. There, the parameters of the effective model are determined. | |
| dc.description | 16 pages, 13 figures included. v2: Order of sections changed. Calculation and discussion of apparent gap in Section IV.A corrected | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0401028 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0401028 | |
| dc.identifier | Phys. Rev. B 70, 245124 (2004) | |
| dc.identifier | doi:10.1103/PhysRevB.70.245124 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/23047 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Systematic Mapping of the Hubbard Model to the Generalized t-J Model | |
| dc.type | text |