Axion Isocurvature Collider

Abstract

Cosmological colliders can preserve information from interactions at very high energy scale, and imprint them on cosmological observables. Taking the squeezed limit of cosmological perturbation bispectrum, information of the intermediate particle can be directly extracted from observations such as cosmological microwave background (CMB). Thus cosmological colliders can be powerful and promising tools to test theoretical models. In this paper, we study extremely light axions (including QCD axions and axion-like-particles), and consider them constituting cold dark matter (CDM) at late times. We are interested in inflationary isocurvature modes by such axions, and try to figure out how axion perturbations can behave as isocurvature colliders. We work out an example where the intermediate particle is a boson, and show that, in the squeezed limit, it is possible to provide a clock signal of significant amplitudes, with a characteristic angular dependence. This provides a channel to contribute and analyze clock signals of isocurvature bispectrum, which we may hopefully see in future experiments.

arXiv comment36 pages, 8 figures

References in corpus (78)

• Axion Cosmology
• String Axiverse
• Axions In String Theory
• Quasi-Single Field Inflation and Non-Gaussianities
• The type IIB string axiverse and its low-energy phenomenology
• BICEP2 / Keck Array x: Constraints on Primordial Gravitational Waves using Planck, WMAP, and New BICEP2/Keck Observations through the 2015 Season
• A search for ultra-light axions using precision cosmological data
• Reduced Limit on the Permanent Electric Dipole Moment of ${}^{199}$Hg
• Signatures of Supersymmetry from the Early Universe
• On Soft Limits of Inflationary Correlation Functions
• Large non-Gaussianities with Intermediate Shapes from Quasi-Single Field Inflation
• Effective field theory approach to quasi-single field inflation and effects of heavy fields
• Non-Gaussianity as a Particle Detector
• Production of dark matter axions from collapse of string-wall systems
• Bootstrapping Inflationary Correlators in Mellin Space
• An M Theory Solution to the Strong CP Problem and Constraints on the Axiverse
• The Cosmological Bootstrap: Weight-Shifting Operators and Scalar Seeds
• A Mellin Space Approach to Cosmological Correlators
• Schwinger-Keldysh Diagrammatics for Primordial Perturbations
• The Quest for an Intermediate-Scale Accidental Axion and Further ALPs
• Standard Model Background of the Cosmological Collider
• Imprint of inflation on galaxy shape correlations
• Productive Interactions: heavy particles and non-Gaussianity
• Prospects for Cosmological Collider Physics
• Loop Corrections to Standard Model Fields in Inflation
• Heavy-Lifting of Gauge Theories By Cosmic Inflation
• Standard Model Mass Spectrum in Inflationary Universe
• Partially Massless Fields During Inflation
• Equilateral non-Gaussianity from heavy fields
• In Search of Large Signals at the Cosmological Collider
• Imprints of Massive Primordial Fields on Large-Scale Structure
• Probing P and CP Violations on the Cosmological Collider
• Quasi Single Field Inflation in the non-perturbative regime
• Effects and Detectability of Quasi-Single Field Inflation in the Large-Scale Structure and Cosmic Microwave Background
• Cosmological Collider Physics and the Curvaton
• Neutrino Signatures in Primordial Non-Gaussianities
• Searches for other vacua II: A new Higgstory at the cosmological collider
• Light Particles with Spin in Inflation
• An ultralight pseudoscalar boson
• A Cosmological Higgs Collider
• The Scalar Chemical Potential in Cosmological Collider Physics
• Seeing Higher-Dimensional Grand Unification In Primordial Non-Gaussianities
• Higher Spin Supersymmetry at the Cosmological Collider: Sculpting SUSY Rilles in the CMB
• Shapes of gravity: Tensor non-Gaussianity and massive spin-2 fields
• Gauge Boson Signals at the Cosmological Collider
• Minimal signatures of the Standard Model in non-Gaussianities
• Non-Gaussian Enhancements of Galactic Halo Correlations in Quasi-Single Field Inflation
• The Supersymmetric Effective Field Theory of Inflation
• Prospects for constraining the shape of non-Gaussianity with the scale-dependent bias
• Strongly Coupled Quasi-Single Field Inflation
• Gravitational Production of Superheavy Dark Matter and Associated Cosmological Signatures
• Cosmological Signatures of Superheavy Dark Matter
• Cosmological Collider Signatures of Massive Vectors from Non-Gaussian Gravitational Waves
• Galaxy imaging surveys as spin-sensitive detector for cosmological colliders
• The Hunt for Primordial Interactions in the Large Scale Structures of the Universe
• High Energy Physics Signatures from Inflation and Conformal Symmetry of de Sitter
• The Axiverse Extended: Vacuum Destabilisation, Early Dark Energy and Cosmological Collapse
• The Cosmological Bootstrap: Spinning Correlators from Symmetries and Factorization
• Disentangling mass spectra of multiple fields in cosmological collider
• Imprints of Oscillatory Bispectra on Galaxy Clustering
• On the inflationary massive field with a curved field manifold
• Spectroscopy of Masses and Couplings during Inflation
• On the Effective Field Theory for Quasi-Single Field Inflation
• Heavy Spinning Particles from Signs of Primordial Non-Gaussianities: Beyond the Positivity Bounds
• Probing the inflationary particle content: extra spin-2 field
• A novel way to determine the scale of inflation
• Heavy Particle Signatures in Cosmological Correlation Functions with Tensor Modes
• Cosmic variance in inflation with two light scalars
• Probing a QCD String Axion with Precision Cosmological Measurements
• Hybrid Quasi-Single Field Inflation
• New Shapes of Primordial Non-Gaussianity from Quasi-Single Field Inflation with Multiple Isocurvatons
• Inflation with Massive Vector Fields
• Boost Breaking in the EFT of Inflation
• A simple, exact, model of quasi-single field inflation
• Perturbative unitarity in quasi-single field inflation
• Non-Gaussianity from $X,Y$ gauge bosons in Cosmological Collider Physics
• Non-Gaussianities in a two-field generalization of Natural Inflation
• Revealing the Structure of the Inflationary Landscape through Primordial non-Gaussianity

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• Cosmological Bootstrap in Slow Motion
• Cutting Rule for Cosmological Collider Signals: A Bulk Evolution Perspective
• Phase Information in Cosmological Collider Signals
• Helical Inflation Correlators: Partial Mellin-Barnes and Bootstrap Equations
• Bootstrapping One-Loop Inflation Correlators with the Spectral Decomposition
• Missing Scalars at the Cosmological Collider
• Closed-Form Formulae for Inflation Correlators
• Parity-Odd and Even Trispectrum from Axion Inflation
• Classical Cosmological Collider Physics and Primordial Features
• NANOGrav signal from axion inflation
• Gravitational Wave Probes of Massive Gauge Bosons at the Cosmological Collider
• Continuous Spectrum on Cosmological Collider
• An Effective Cosmological Collider
• Analytic Formulae for Inflationary Correlators with Dynamical Mass
• Fingerprints of a Non-Inflationary Universe from Massive Fields
• A Match Made in Heaven: Linking Observables in Inflationary Cosmology
• Non-Gaussianity from explicit $U(1)$-breaking interactions