Hierarchies from fluxes in string compactifications
TLDR
In this article, the authors show that the hierarchy of scales can be fixed by a choice of Ramond-Ramond and Neveu-Schwarz fluxes in the compact manifold, and give examples involving orientifold compactifications of type IIB string theory and F-theory compactifications on Calabi-Yau fourfolds.Abstract:
Warped compactifications with significant warping provide one of the few known mechanisms for naturally generating large hierarchies of physical scales. We demonstrate that this mechanism is realizable in string theory, and give examples involving orientifold compactifications of type-IIB string theory and F-theory compactifications on Calabi-Yau fourfolds. In each case, the hierarchy of scales is fixed by a choice of Ramond-Ramond and Neveu-Schwarz fluxes in the compact manifold. Our solutions involve compactifications of the Klebanov-Strassler gravity dual to a confining $\mathcal{N}=1$ supersymmetric gauge theory, and the hierarchy reflects the small scale of chiral symmetry breaking in the dual gauge theory.read more
Citations
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Volume modulus inflection point inflation and the gravitino mass problem
Marcin Badziak,Marek Olechowski +1 more
TL;DR: In this article, the authors investigated several models of inflection point inflation with the volume modulus as the inflaton and found that the gravitino mass may be much smaller than the Hubble scale during inflation if at least one of the non-perturbative terms has a positive exponent.
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The effective action of warped M-theory reductions with higher-derivative terms - Part II
TL;DR: In this article, the authors studied the three-dimensional effective action obtained by reducing eleven-dimensional supergravity with higher-derivative terms on a background solution including a warp-factor, an eight-dimensional compact manifold, and fluxes.
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Nonrenormalization of flux superpotentials in string theory
TL;DR: In this paper, a simple non-renormalization theorem for a broad class of Type IIB vacua using the known symmetries of these compactifications was provided, which put them on a similar footing as the better-known nonrenormalisation theorems of heterotic vacua without fluxes.
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AdS4 flux vacua in type II superstrings and their domain-wall solutions
TL;DR: In this article, the authors investigate the emergence of supersymmetric negative-vacuum-energy ground states in four dimensions, based on the analysis of the effective superpotential, which depends on the background fluxes of the internal manifold.
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Lectures on Nongeometric Flux Compactifications
TL;DR: In this paper, a pedagogical review of nongeometric flux compactifications is presented based on lectures given at the 2007 RTN Winter School at CERN, where the authors argue that one must include non-geometric "fluxes" in order to have a superpotential which is invariant under T-duality.
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Igor R. Klebanov,Edward Witten +1 more
TL;DR: In this paper, it was shown that string theory on AdS5 × X5 can be described by a certain N = 1 supersymmetric gauge theory, which we describe in detail.