Semi-fermionic approach for quantum spin systems
| dc.creator | Kiselev, M. N. | |
| dc.date | 2002-12-28 | |
| dc.date.accessioned | 2026-07-07T02:48:56Z | |
| dc.date.available | 2026-07-07T02:48:56Z | |
| dc.description | We present a general derivation of semi-fermionic representation for generators of SU(N) group as a bilinear combination of Fermi operators. The constraints are fulfilled by means of imaginary Lagrange multipliers. The important case of SU(2) group is discussed. We demonstrate how the idea of semi-fermionic representation might be extended to the groups possessing dynamic symmetries. As an example, SO(4) group is considered. We illustrate the application of semi-fermionic representations for various problems of strongly correlated physics. | |
| dc.description | Extended version of the talk given at TH-2002 conference, Paris, July 22-27 (2002), 16 pages, RevTeX, 7 EPS figures included | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0212620 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0212620 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/20605 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Semi-fermionic approach for quantum spin systems | |
| dc.type | text |