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- W3099049300 abstract "We investigate the lifting of half-maximal four-dimensional gauged supergravities to compactifications of string theory. It is shown that a class of such supergravities can arise from compactifications of IIA string theory on manifolds of SU(2)-structure which may be thought of as K3 fibrations over T^2. Examples of these SU(2)-structure backgrounds, as smooth K3 bundles and as compactifications with H-flux, are given and we also find evidence for a class of non-geometric, Mirror-fold backgrounds. By applying the duality between IIA string theory on K3 and Heterotic string theory on T^4 fibrewise, we argue that these SU(2)-structure backgrounds are dual to Heterotic compactifications on a class T^4 fibrations over T^2. Examples of these fibrations as twisted tori, H-flux and T-fold compactifications are given. We also construct a new set of backgrounds, particular to Heterotic string theory, which includes a previously unknown class of Heterotic T-folds. A sigma model description of these backgrounds, from the Heterotic perspective, is presented in which we generalize the Bosonic doubled formalism to Heterotic string theory." @default.
- W3099049300 created "2020-11-23" @default.
- W3099049300 creator A5045187327 @default.
- W3099049300 creator A5082027518 @default.
- W3099049300 date "2008-12-12" @default.
- W3099049300 modified "2023-10-16" @default.
- W3099049300 title "𝒩 = 4 gauged supergravity from duality-twist compactifications of string theory" @default.
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- W3099049300 doi "https://doi.org/10.1088/1126-6708/2008/12/052" @default.
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