Many-body generalization of the Z2 topological invariant for the quantum spin Hall effect
| dc.creator | Lee, Sung-Sik | |
| dc.creator | Ryu, Shinsei | |
| dc.date | 2007-08-13 | |
| dc.date | 2008-05-02 | |
| dc.date.accessioned | 2026-07-07T09:37:09Z | |
| dc.date.available | 2026-07-07T09:37:09Z | |
| dc.description | We propose a many-body generalization of the Z2 topological invariant for the quantum spin Hall insulator, which does not rely on single-particle band structures. The invariant is derived as a topological obstruction that distinguishes topologically distinct many-body ground states on a torus. It is also expressed as a Wilson-loop of the SU(2) Berry gauge field, which is quantized due to the time-reversal symmetry. | |
| dc.description | 4 pages, 3 figures (final version to appear in Phys. Rev. Lett.) | |
| dc.identifier | https://arxiv.org/abs/0708.1639 | |
| dc.identifier | http://arxiv.org/abs/0708.1639 | |
| dc.identifier | Phys. Rev. Lett. 100, 186807 (2008) | |
| dc.identifier | doi:10.1103/PhysRevLett.100.186807 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/160360 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Many-body generalization of the Z2 topological invariant for the quantum spin Hall effect | |
| dc.type | text |