Quantum antiferromagnetism in the d=3 Hubbard model --- a spin-fluctuation approach
| dc.creator | Singh, Avinash | |
| dc.date | 1998-02-04 | |
| dc.date | 1998-05-28 | |
| dc.date.accessioned | 2026-07-07T03:09:55Z | |
| dc.date.available | 2026-07-07T03:09:55Z | |
| dc.description | A self-consistent spin-fluctuation theory is developed to obtain T_N vs. U for the half-filled Hubbard antiferromagnet in the whole U/t range. Good agreement is obtained in the strong coupling limit with the high-temperature series-expansion result for the equivalent Heisenberg model. Quantum, spin-fluctuation correction to the sublattice magnetization is also obtained for all U at the one-loop level. A spin picture is used throughout, and quantum effects are incorporated through transverse spin fluctuations, which are evaluated in the RPA using a new method. | |
| dc.description | 7 pages references, additional work added | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9802047 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9802047 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/28072 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Quantum antiferromagnetism in the d=3 Hubbard model --- a spin-fluctuation approach | |
| dc.type | text |