Exact four-spinon dynamical correlation function in isotropic Heisenberg model
| dc.creator | Abada, A. | |
| dc.creator | Bougourzi, A. H. | |
| dc.creator | Seba, S. | |
| dc.creator | Si-Lakhal, B. | |
| dc.date | 1998-02-25 | |
| dc.date | 1998-05-15 | |
| dc.date.accessioned | 2026-07-07T03:10:01Z | |
| dc.date.available | 2026-07-07T03:10:01Z | |
| dc.description | We discuss some properties of the exact four-spinon dynamical correlation function $S_4$ in the antiferromagnetic spin 1/2 $XXX$-model, the expression of which we derived recently. We show that the region in which it is not identically zero is different from and larger than the spin-wave continuum. We describe its behavior as a function of the neutron momentum transfer $k$ for fixed values of the neutron energy $ω$ and compare it to the one corresponding to the exact two-spinon dynamical correlation function $S_2$. We show that the overall shapes are quite similar, even though the expression of $S_4$ is much more involved than that of $S_2$. We finish with concluding remarks. | |
| dc.description | Revtex, 9 eps figures. A revised version following a pertinent remark from the referee. Same resutls but the discussion is reshaped accordingly | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9802271 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9802271 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/28118 | |
| dc.subject | Condensed Matter | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Exact four-spinon dynamical correlation function in isotropic Heisenberg model | |
| dc.type | text |