Aligned natural inflation with modulations

Abstract

The weak gravity conjecture applied for the aligned natural inflation indicates that generically there can be a modulation of the inflaton potential, with a period determined by sub-Planckian axion scale. We study the oscillations in the primordial power spectrum induced by such modulation, and discuss the resulting observational constraints on the model.

21 pages, 4 figures; v2: minor corrections, references added, figure added

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Cited by in corpus (28)

• The Swampland: Introduction and Review
• Evidence for a Lattice Weak Gravity Conjecture
• Recent Progress in the Physics of Axions and Axion-Like Particles
• The Weak Gravity Conjecture in three dimensions
• The ALP miracle: unified inflaton and dark matter
• Euclidean wormholes, baby universes, and their impact on particle physics and cosmology
• Relaxion Monodromy and the Weak Gravity Conjecture
• Primordial black holes and associated gravitational waves in axion monodromy inflation
• Primordial black holes as dark matter and gravitational waves from bumpy axion inflation
• Isotropic cosmic birefringence from early dark energy
• The Weak Gravity Conjecture and the Axionic Black Hole Paradox
• Nonlinear perturbations from axion-gauge fields dynamics during inflation
• Higgs relaxation after inflation
• Oscillating Chiral Tensor Spectrum from Axionic Inflation
• Nonlinear perturbations from the coupling of the inflaton to a non-Abelian gauge field, with a focus on Chromo-Natural Inflation
• Monodromy Dark Matter
• Towards a Swampland Global Symmetry Conjecture using Weak Gravity
• A Conjecture on the Minimal Size of Bound States
• Inflation from periodic extra dimensions
• Axion Inflation and Affleck-Dine Baryogenesis
• Relaxion Dark Matter
• Swampland Bounds on Dark Sectors
• Probing the Weak Gravity Conjecture in the Cosmic Microwave Background
• Aligned Natural Inflation in the Large Volume Scenario
• Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme
• Analytic results in aligned axion inflation
• Supersymmetric Inflation from the Fifth Dimension
• Mixing Particle Production for Relaxion Mechanism