Browsing by Subject "String models"
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Item Aspects of string theory compactifications(2004) Park, Hyukjae; Distler, JacquesItem String theory, holography, and UV-IR mixing(2002-05) McNees, Robert Alfred; Fischler, WillyItem Type II flux compactifications(2008-08) Wrase, Timm Michael, 1978-; Distler, JacquesOrientifolds of type II string theory offer a promising toolkit for model builders, especially when one includes not only the usual fluxes from NSNS and RR field strengths, but also fluxes that are T-dual to the NSNS three-form flux. These additional ingredients can help stabilize moduli and lead to D-term contributions to the effective scalar potential. We describe in general how these fluxes appear as parameters of an effective N = 1 supergravity theory in four dimensions for type IIA and type IIB string theory. We also show how these fluxes arise from compactifications on six-dimensional spaces that can be described by toroidal fibers twisted over a toroidal base. This approach leads us to a more subtle treatment of the quantization of the general NSNS fluxes. We illustrate these phenomena with examples of certain orientifolds of T⁶/Z₄.