Marshall-Peierls sign rule in frustrated Heisenberg chains
| dc.creator | Voigt, Andreas | |
| dc.creator | Richter, Johannes | |
| dc.date | 2000-03-13 | |
| dc.date.accessioned | 2026-07-07T02:37:03Z | |
| dc.date.available | 2026-07-07T02:37:03Z | |
| dc.description | We consider the frustrated antiferromagnetic s=1 Heisenberg quantum spin chain with regard to the Marshall-Peierls sign rule (MPSR). By using exact diagonalization data we investigate the breakdown of the MPSR in dependence on frustration and compare our findings with data for s=1/2. We calculate a critical value of frustration J_2(crit) where the MPSR is violated. The extrapolation of this value to the infinite chain limit holds J_2(crit) approx. 0.016, lower than in the case of s=1/2 (J_2(crit) approx. 0.027). This points to a stronger influence of frustration in the case of s=1. Nevertheless the calculation of the weight of the Ising-states violating the MPSR shows that the MPSR holds approximately even for quite large frustration and may be used for numerical techniques. | |
| dc.description | 4 pages (Latex), 2 Postscript figures, to be published in acta physica polonica A (European Conference 'Physics of Magnetism 99') | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0003207 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0003207 | |
| dc.identifier | Acta Physica Polonica A 97(5), p.979ff (2000) | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/16147 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Marshall-Peierls sign rule in frustrated Heisenberg chains | |
| dc.type | text |