On de Sitter Vacua in Type IIA Orientifold Compactifications

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dc.creatorSaueressig, Frank
dc.creatorTheis, Ulrich
dc.creatorVandoren, Stefan
dc.date2005-06-22
dc.date2005-06-27
dc.date.accessioned2026-07-07T06:24:59Z
dc.date.available2026-07-07T06:24:59Z
dc.descriptionThis letter discusses the orientifold projection of the quantum corrections to type IIA strings compactified on rigid Calabi-Yau threefolds. It is shown that N=2 membrane instanton effects give a holomorphic contribution to the superpotential, while the perturbative corrections enter into the Kahler potential. At the level of the scalar potential the corrections to the Kahler potential give rise to a positive energy contribution similar to adding anti-D3-branes in the KKLT scenario. This provides a natural mechanism to lift an AdS vacuum to a meta-stable dS vacuum.
dc.description5 pages, no figures, minor changes, references added
dc.identifierhttps://arxiv.org/abs/hep-th/0506181
dc.identifierhttp://arxiv.org/abs/hep-th/0506181
dc.identifierPhys.Lett. B633 (2006) 125-128
dc.identifierdoi:10.1016/j.physletb.2005.11.059
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96728
dc.subjectHigh Energy Physics - Theory
dc.titleOn de Sitter Vacua in Type IIA Orientifold Compactifications
dc.typetext

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