Instantons, Hypermultiplets and the Heterotic String

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dc.creatorHalmagyi, Nick
dc.creatorMelnikov, Ilarion V.
dc.creatorSethi, Savdeep
dc.date2007-04-25
dc.date2007-08-01
dc.date.accessioned2026-07-07T10:35:42Z
dc.date.available2026-07-07T10:35:42Z
dc.descriptionHypermultiplet couplings in type IIA string theory on a Calabi-Yau space can be quantum corrected by D2-brane instantons wrapping special Lagrangian cycles. On the other hand, hypermultiplet couplings in the heterotic string on a K3 surface are corrected by world-sheet instantons wrapping curves. In a class of examples, we relate these two sets of instanton corrections. We first present an analogue of the c-map for the heterotic string via a dual flux compactification of M-theory. Using this duality, we propose two ways of capturing quantum corrections to hypermultiplets. We then use the orientifold limit of certain F-theory compactifications to relate curves in K3 to special Lagrangians in dual type IIA compactifications. We conclude with some results from perturbative string theory for hypermultiplet F-terms and a conjecture about the topology of brane instantons.
dc.description52 pages, LaTeX; references, some corrections and clarifications added to the published version
dc.identifierhttps://arxiv.org/abs/0704.3308
dc.identifierhttp://arxiv.org/abs/0704.3308
dc.identifierJHEP0707:086,2007
dc.identifierdoi:10.1088/1126-6708/2007/07/086
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179815
dc.subjectHigh Energy Physics - Theory
dc.titleInstantons, Hypermultiplets and the Heterotic String
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