Ground-State Degeneracy of Correlated Insulators with Edges
| dc.creator | Refael, Gil | |
| dc.creator | Lin, Hsiu-Hau | |
| dc.date | 2004-09-28 | |
| dc.date.accessioned | 2026-07-07T03:01:05Z | |
| dc.date.available | 2026-07-07T03:01:05Z | |
| dc.description | Using the topological flux insertion procedure, the ground-state degeneracy of an insulator on a periodic lattice with filling factor $ν=p/q$ was found to be at least $q$-fold. Applying the same argument in a lattice with edges, we show that the degeneracy is modified by the additional edge density $ν_{\mysw{E}}$ associated with the open boundaries. In particular, we demonstrate that these edge corrections may even make an insulator with integer bulk filling degenerate. | |
| dc.description | 4 pages, REVTeX 4 | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0409729 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0409729 | |
| dc.identifier | Phys. Rev. B 72, 073109 (2005) | |
| dc.identifier | doi:10.1103/PhysRevB.72.073109 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/24952 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Ground-State Degeneracy of Correlated Insulators with Edges | |
| dc.type | text |