Quantum spin tunneling in a soluble quasi-spin model: An angle-based potential description
| dc.creator | Galetti, D. | |
| dc.creator | Lima, C. L. | |
| dc.creator | Pimentel, B. M. | |
| dc.date | 2004-07-21 | |
| dc.date.accessioned | 2026-07-07T06:10:23Z | |
| dc.date.available | 2026-07-07T06:10:23Z | |
| dc.description | We propose an approach which allows to construct and use a potential function written in terms of an angle variable to describe interacting spin systems. We show how this can be implemented in the Lipkin-Meshkov-Glick, here considered a paradigmatic spin model. It is shown how some features of the energy gap can be interpreted in terms of a spin tunneling. A discrete Wigner function is constructed for a symmetric combination of two states of the model and its time evolution is obtained. The physical information extracted from that function reinforces our description of phase oscillations in a potential. | |
| dc.description | 6 figures .eps | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0407170 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0407170 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/92245 | |
| dc.subject | Quantum Physics | |
| dc.title | Quantum spin tunneling in a soluble quasi-spin model: An angle-based potential description | |
| dc.type | text |