Instanton corrections to the effective action of the CHL string and its type I dual
| dc.creator | Bain, P. | |
| dc.date | 2002-05-08 | |
| dc.date.accessioned | 2026-07-07T04:13:30Z | |
| dc.date.available | 2026-07-07T04:13:30Z | |
| dc.description | In this letter, we investigate corrections to quartic gauge couplings in compactifications of string theories on a 2-torus without vector structure. First, we calculate the threshold corrections to F^4 terms in the heterotic CHL string. Then, using the CHL string/type I duality dictionary, we map these corrections to perturbative and non-perturbative effects in type I string compactified on 2-torus without vector structure. Comparing the perturbative terms provides a quantitative test of the S-duality conjecture. The non-perturbative contributions are due to D-strings wrapping the torus. A T-duality along one of the compactified directions allows us to compare these instanton corrections to the ones obtained in a standard type I compactifications. The most striking feature is that these non-perturbative couplings turn out to be identical for both models. | |
| dc.description | 18 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/hep-th/0205073 | |
| dc.identifier | http://arxiv.org/abs/hep-th/0205073 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/51283 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Instanton corrections to the effective action of the CHL string and its type I dual | |
| dc.type | text |