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

Alexandrov, S., Sen, A. & Stefanski, B. (2021). D-instantons in Type IIA string theory on Calabi-Yau threefolds. .


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.

Publication Type: Monograph (Working Paper)
Publisher Keywords: High Energy Physics - Theory (hep-th)
Subjects: Q Science > QC Physics
Departments: School of Science & Technology > Mathematics
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