- D-instantons in Type IIA string theory on Calabi-Yau threefolds doi link

Auteur(s): Alexandrov S., Sen Ashoke, Stefański Bogdan

(Article) Publié: Journal Of High Energy Physics, vol. 2021 p.18 (2021)
Texte intégral en Openaccess : arxiv

Ref HAL: hal-03319142_v1
Ref Arxiv: 2108.04265
DOI: 10.1007/JHEP11(2021)018
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote

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.