M Theory, Orientifolds and G-Flux

Details M Theory, Orientifolds and G-Flux M Theory, Orientifolds and G-Flux

1999-08-12

arxiv.org/abs/hep-th/9908088v3

JHEP 9908 (1999) 023

Physics

High Energy Physics

High Energy Physics - Theory

28 pages, harvmac; references added; some formulae corrected

Scientific paper

10.1088/1126-6708/1999/08/023

We study the properties of M and F theory compactifications to three and four dimensions with background fluxes. We provide a simple construction of supersymmetric vacua, including some with orientifold descriptions. These vacua, which have warp factors, typically have fewer moduli than conventional Calabi-Yau compactifications. The mechanism for anomaly cancellation in the orientifold models involves background RR and NS fluxes. We consider in detail an orientifold of $K3\times T^2$ with background fluxes. After a combination of T and S-dualities, this type IIB orientifold is mapped to a compactification of the SO(32) heterotic string on a non-Kahler space with torsion.

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