The Berry phase: a topological test for the spectrum structure of frustrated quantum spin systems
| dc.creator | Richert, J. | |
| dc.date | 2008-07-17 | |
| dc.date.accessioned | 2026-07-07T09:50:57Z | |
| dc.date.available | 2026-07-07T09:50:57Z | |
| dc.description | The nature of the low energy spectrum of frustrated quantum spin systems is investigated by means of a topological test introduced by Y. Hatsugai which enables to infer the possible existence or absence of a gap between the ground state and excited states of these systems. The test relies on the determination of an order parameter which is a Berry phase. The structure of the spectra of even and odd-legged systems in 2d and 3d is analyzed. Results are confronted with previous work. | |
| dc.description | 11 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/0807.2720 | |
| dc.identifier | http://arxiv.org/abs/0807.2720 | |
| dc.identifier | PLA 372 (2008) 5352 - 5355 | |
| dc.identifier | doi:10.1016/j.physleta.2008.06.016 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/165124 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | The Berry phase: a topological test for the spectrum structure of frustrated quantum spin systems | |
| dc.type | text |