Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2003-12-10
JHEP 0404:003,2004
Physics
High Energy Physics
High Energy Physics - Theory
30 pages, harvmac big; refs and minor comments added
Scientific paper
10.1088/1126-6708/2004/04/003
The presence of RR and NS three-form fluxes in type IIB string compactification on a Calabi-Yau orientifold gives rise to a nontrivial superpotential W for the dilaton and complex structure moduli. This superpotential is computable in terms of the period integrals of the Calabi-Yau manifold. In this paper, we present explicit examples of both supersymmetric and nonsupersymmetric solutions to the resulting 4d N=1 supersymmetric no-scale supergravity, including some nonsupersymmetric solutions with relatively small values of W. Our examples arise on orientifolds of the hypersurfaces in $WP^{4}_{1,1,1,1,4}$ and $WP^{4}_{1,1,2,2,6}$. They serve as explicit illustrations of several of the ingredients which have played a role in the recent proposals for constructing de Sitter vacua of string theory.
Giryavets Alexander
Kachru Shamit
Tripathy Prasanta K.
Trivedi Sandip P.
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