A flux-scaling scenario for moduli stabilization and axion inflation in string theory

Font, Anamarı́a

doi:10.1142/9789813226609_0569

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…However, in order to have a physical consistent frame, it is necessary to have some hierarchies on the different scales as

M_{s} > M_{KK} > M_{inf} > M_{i,} mod > H_{inf} > M_{θ},

where θ is the inflaton. The flux‐scaling scenario establishes a mechanism to accomplish all the above requirements by having a parametrical control of the different scales and mass of the moduli by the presence of different kind of fluxes which precisely generates a perturbative tree‐level superpotential on moduli. Roughly speaking, it is required a model with a symmetric superpotential on n complex fields in the presence of

2 n - 1

real fluxes.…”

Section: Introductionmentioning

confidence: 99%

Two‐Field Axion Inflation and the Swampland Constraint in the Flux‐Scaling Scenario

Damián

Loaiza-Brito

2018

Fortschritte der Physik

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Based on the flux‐scaling scenario we study a model consisting on Type IIB string theory compactified on a Calabi‐Yau manifold with a frozen complex structure in the presence of generic fluxes. The model contains (meta)stable Minkowski and de Sitter vacua as well as inflationary directions driven by two independent linear combination of axions. Due to a numerical control by fluxes, we show that cosmological parameters as the spectral index, tensor‐to‐scalar ratio and non‐Gaussianities can be kept within observed bounds while preserving the desired hierarchies on physical scales. Moreover we compute the deviation of the inflationary trajectories from geodesics on field space in terms of the fluxes showing that for some regions, they fulfill the recent proposed swampland criterion for multi‐field scenarios.

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“…However, in order to have a physical consistent frame, it is necessary to have some hierarchies on the different scales as

M_{s} > M_{KK} > M_{inf} > M_{i,} mod > H_{inf} > M_{θ},

2 n - 1

real fluxes.…”

Section: Introductionmentioning

confidence: 99%

Two‐Field Axion Inflation and the Swampland Constraint in the Flux‐Scaling Scenario

Damián

Loaiza-Brito

2018

Fortschritte der Physik

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“…Non-geometric fluxes have also been studied in the context of the flux-scaling scenario in order to have some parametrical control to generate almost flat directions in moduli space, testing wether inflationary directions and stabilization of all moduli come along [52,53,56,57]. This approach was followed in the context of F-term axion monodromy inflation [58,59] (see [60][61][62][63] for relations among the flux-scaling scenario, hierarchy on moduli mass and the Swampland).…”

Section: Contentsmentioning

confidence: 99%

Leaving the Swampland: non-geometric fluxes and the distance conjecture

Bizet

Damián

Loaiza-Brito

et al. 2019

J. High Energ. Phys.

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We study a Type IIB isotropic toroidal compactification with non-geometric fluxes. Under the assumption of a hierarchy on the moduli, an effective scalar potential is constructed showing a runaway direction on the real part of the Kähler modulus while the rest of the moduli are stabilized. For the effective model to be consistent it is required that displacements in the field space are finite. Infinite distances in field space would imply a breakdown in the hierarchy assumption on the moduli. In this context, the Swampland Distance Conjecture is satisfied suggesting the possibility of leaving or entering the Swampland by a parametric control of the fluxes. This is achieved upon allowing the non-geometric fluxes to take fractional values. In the process we are able to compute the cut-off scale below which the theory is valid, completely depending on the flux configuration. We also report on the appearance of a discrete spectrum of values for the string coupling at the level of the effective theory.

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A flux-scaling scenario for moduli stabilization and axion inflation in string theory

Cited by 2 publications

References 13 publications

Two‐Field Axion Inflation and the Swampland Constraint in the Flux‐Scaling Scenario

Two‐Field Axion Inflation and the Swampland Constraint in the Flux‐Scaling Scenario

Leaving the Swampland: non-geometric fluxes and the distance conjecture

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