Membrane Instantons and de Sitter Vacua

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dc.creatorDavidse, Marijn
dc.creatorSaueressig, Frank
dc.creatorTheis, Ulrich
dc.creatorVandoren, Stefan
dc.date2005-06-13
dc.date2005-09-19
dc.date.accessioned2026-07-07T06:20:26Z
dc.date.available2026-07-07T06:20:26Z
dc.descriptionWe investigate membrane instanton effects in type IIA strings compactified on rigid Calabi-Yau manifolds. These effects contribute to the low-energy effective action of the universal hypermultiplet. In the absence of additional fivebrane instantons, the quaternionic geometry of this hypermultiplet is determined by solutions of the three-dimensional Toda equation. We construct solutions describing membrane instantons, and find perfect agreement with the string theory prediction. In the context of flux compactifications we discuss how membrane instantons contribute to the scalar potential and the stabilization of moduli. Finally, we demonstrate the existence of meta-stable de Sitter vacua.
dc.descriptionv3: minor clarifications, JHEP version, 38 pages
dc.identifierhttps://arxiv.org/abs/hep-th/0506097
dc.identifierhttp://arxiv.org/abs/hep-th/0506097
dc.identifierJHEP 0509 (2005) 065
dc.identifierdoi:10.1088/1126-6708/2005/09/065
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/95328
dc.subjectHigh Energy Physics - Theory
dc.titleMembrane Instantons and de Sitter Vacua
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