D-instantons in Type IIA string theory on Calabi-Yau threefolds
| Autor: | Alexandrov, Sergei, Sen, Ashoke, Stefański jr, Bogdan |
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| Rok vydání: | 2021 |
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| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/JHEP11(2021)018 |
| Popis: | Type IIA string theory compactified on a Calabi-Yau threefold has a hypermultiplet moduli space whose metric is known to receive non-perturbative corrections from Euclidean D2-branes wrapped on 3-cycles. These corrections have been computed earlier by making use of mirror symmetry, S-duality and twistorial description of quaternionic geometries. In this paper we compute the leading corrections in each homology class using a direct world-sheet approach without relying on any duality symmetry or supersymmetry. Our results are in perfect agreement with the earlier predictions. Comment: 42+17 pages |
| Databáze: | arXiv |
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