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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Tuning and backreaction in F-term axion monodromy inflation
TL;DR: In this paper, the authors continue the development of axion monodromy inflation, focusing in particular on the backreaction of complex structure moduli, and calculate the resulting inflaton potential and study the feasibility of the overall tuning given the limited freedom of the flux landscape.
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Properties Of Heterotic Vacua From Superpotentials
TL;DR: In this article, the superpotential for the heterotic string compactified on non-Kahler complex manifolds is studied and an estimate of the radial modulus of these manifolds are given.
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Backreaction Issues in Axion Monodromy and Minkowski 4-forms
TL;DR: In this article, the authors clarified the differences between the usual Kaloper-Sorbo description of axion monodromy and the effective axionic potential in terms of Minkowski 4-forms derived in string compactifications.
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On gravity dual of a metastable vacuum in Klebanov-Strassler theory
TL;DR: In this paper, a supergravity description of the metastable state that is created by a stack of $ \overline {\text{D}} 3 $¯¯¯¯ -branes placed at the tip of the KS background was discussed.
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A New Handle on de Sitter Compactifications
Alex Saltman,Eva Silverstein +1 more
TL;DR: In this paper, a large class of de Sitter vacua of critical string theory from flux compactifications on products of Riemann surfaces is constructed, and it is shown that these effects self-consistently dominate over standard estimates for further quantum corrections, via tuning available from large flux and brane quantum numbers.
References
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Supergravity and a confining gauge theory: duality cascades and χSB-resolution of naked singularities
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Superconformal field theory on threebranes at a Calabi-Yau singularity
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.