scispace - formally typeset
Open AccessJournal ArticleDOI

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
More filters
Journal ArticleDOI

Bounds on Slow Roll and the de Sitter Swampland

TL;DR: In this paper, the de Sitter swampland conjecture is viewed as a (hierarchically large) bound on the smallness of the slow roll parameter, and it is conjectured that the bound is not necessarily on the parameter, but on slow roll itself.
Journal ArticleDOI

Brane Inflation and Cosmic String Tension in Superstring Theory

TL;DR: In this paper, a simple reanalysis of the KKLMMT scenario in superstring theory requires no more than a moderate tuning, and the cosmic string tension is very sensitive to the conformal coupling.
Posted Content

Les Houches Lectures on Strings and Arithmetic

TL;DR: The Les Houches workshop on number theory, physics, and geometry as discussed by the authors discussed the role of the Rademacher expansion of coefficients of modular forms in the AdS/CFT correspondence, and the importance of supergravity in selecting certain arithmetic Calabi-Yau's as distinguished compactifications.
Journal ArticleDOI

Lifting D-instanton zero modes by recombination and background fluxes

TL;DR: In this article, the conditions under which D-brane instantons in Type II orientifold compactifications generate a nonperturbative superpotential were studied and two strategies to lift the additional zero modes were analyzed.
Journal ArticleDOI

Comparing infrared Dirac-Born-Infeld brane inflation to observations

TL;DR: In this paper, the authors compare the infrared Dirac-Born-Infeld brane inflation model to observations using a Bayesian analysis, and quantify some distinctive testable predictions with stringy signatures, such as the large non-Gaussianity, and the large, but regional, running of the spectral index.
References
More filters
Journal ArticleDOI

The Large N limit of superconformal field theories and supergravity

TL;DR: In this article, it was shown that the large-N limits of certain conformal field theories in various dimensions include in their Hilbert space a sector describing supergravityon the product of anti-de Sitter spacetimes, spheres, and other compact manifolds.
Journal ArticleDOI

Large Mass Hierarchy from a Small Extra Dimension

TL;DR: In this paper, the weak scale is generated from the Planck scale through an exponential hierarchy, but this exponential arises not from gauge interactions but from the background metric, which is a slice of spacetime.
Journal ArticleDOI

An Alternative to compactification

TL;DR: In this paper, a single 3-brane embedded in five dimensions was shown to reproduce four-dimensional Newtonian and general relativistic gravity to more than adequate precision, even without a gap in the Kaluza-Klein spectrum.
Journal ArticleDOI

Supergravity and a confining gauge theory: duality cascades and χSB-resolution of naked singularities

TL;DR: In this article, a non-singular pure-supergravity background dual to the field theory on all scales, with small curvature everywhere if the ‘t Hooft coupling gsM is large, was proposed.
Journal ArticleDOI

Superconformal field theory on threebranes at a Calabi-Yau singularity

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.
Related Papers (5)