Global Aspects of T-Duality, Gauged Sigma Models and T-Folds
| dc.creator | Hull, C. M. | |
| dc.date | 2006-04-25 | |
| dc.date | 2007-09-28 | |
| dc.date.accessioned | 2026-07-07T11:06:29Z | |
| dc.date.available | 2026-07-07T11:06:29Z | |
| dc.description | The gauged sigma-model argument that string backgrounds related by T-dual give equivalent quantum theories is revisited, taking careful account of global considerations. The topological obstructions to gauging sigma-models give rise to obstructions to T-duality, but these are milder than those for gauging: it is possible to T-dualise a large class of sigma-models that cannot be gauged. For backgrounds that are torus fibrations, it is expected that T-duality can be applied fibrewise in the general case in which there are no globally-defined Killing vector fields, so that there is no isometry symmetry that can be gauged; the derivation of T-duality is extended to this case. The T-duality transformations are presented in terms of globally-defined quantities. The generalisation to non-geometric string backgrounds is discussed, the conditions for the T-dual background to be geometric found and the topology of T-folds analysed. | |
| dc.description | Minor corrections and additions | |
| dc.identifier | https://arxiv.org/abs/hep-th/0604178 | |
| dc.identifier | http://arxiv.org/abs/hep-th/0604178 | |
| dc.identifier | JHEP0710:057,2007 | |
| dc.identifier | doi:10.1088/1126-6708/2007/10/057 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/189538 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Global Aspects of T-Duality, Gauged Sigma Models and T-Folds | |
| dc.type | text |