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

A bstract 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-duali...

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Bibliographic Details
Published in:The journal of high energy physics 2021-11, Vol.2021 (11), p.1-58, Article 18
Main Authors: Alexandrov, Sergei, Sen, Ashoke, Stefański, Bogdan
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
D-branes
Elementary Particles
High energy physics
High Energy Physics - Theory
Homology
Instantons
Nonperturbative Effects
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Superstrings and Heterotic Strings
Supersymmetry
Symmetry
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Summary:A bstract 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.
ISSN:1029-8479
1126-6708
1029-8479
DOI:10.1007/JHEP11(2021)018