On NS5-brane instantons and volume stabilization

Details On NS5-brane instantons and volume stabilization On NS5-brane instantons and volume stabilization

2008-01-25

arxiv.org/abs/0801.3949v3

JHEP0804:024,2008

Physics

High Energy Physics

High Energy Physics - Theory

29 pages, 3 figures; statements about fields G^a made more precise, added some clarifications, typos corrected

Scientific paper

10.1088/1126-6708/2008/04/024

We study general aspects of NS5-brane instantons in relation to the stabilization of the volume modulus in Calabi-Yau compactifications of type II strings with fluxes, and their orientifold versions. These instantons correct the Kahler potential and generically yield significant contributions to the scalar potential at intermediate values of string coupling constant and volume. Under suitable conditions they yield uplifting terms that allow for meta--stable de Sitter vacua.

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