1999/08/31 by Keshav Dasgupta, Govindan Rajesh, Savdeep Sethi · 1 citation
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1088/1126-6708/1999/08/023
published as JHEP 9908 (1999) 023 · 28 pages, harvmac; references added; some formulae corrected
arxiv created 2001/09/25 · arxiv updated 2009/11/30
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× T2 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.