Evidence for Tadpole Cancellation in the Topological String
| dc.creator | Walcher, Johannes | |
| dc.date | 2007-12-17 | |
| dc.date | 2009-02-04 | |
| dc.date.accessioned | 2026-07-07T12:37:07Z | |
| dc.date.available | 2026-07-07T12:37:07Z | |
| dc.description | We study the topological string on compact Calabi-Yau threefolds in the presence of orientifolds and D-branes. In examples, we find that the total topological string amplitude admits a BPS expansion only if the topological charge of the D-brane is equal to that of the orientifold plane. We interpret this as a manifestation of a general tadpole cancellation condition in the topological string that is necessary for decoupling of A- and B-model in loop amplitudes. Our calculations in the A-model involve an adapted version of existing localization techniques, and give predictions for the real enumerative geometry of higher genus curves in Calabi-Yau manifolds. In the B-model, we introduce an extension of the holomorphic anomaly equation to unoriented strings. | |
| dc.description | 57 pages, 9 figures, v2: minor clarifications | |
| dc.identifier | https://arxiv.org/abs/0712.2775 | |
| dc.identifier | http://arxiv.org/abs/0712.2775 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/218325 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Evidence for Tadpole Cancellation in the Topological String | |
| dc.type | text |