Revisiting isocurvature bounds in models unifying the axion with the inflaton

Abstract

Axion scenarios in which the spontaneous breaking of the Peccei-Quinn symmetry takes place before or during inflation, and in which axion dark matter arises from the misalignment mechanism, can be constrained by Cosmic Microwave Background isocurvature bounds. Dark matter isocurvature is thought to be suppressed in models with axion-inflaton interactions, for which axion perturbations are assumed to freeze at horizon crossing during inflation. However, this assumption can be an oversimplification due to the interactions themselves. In particular, non-perturbative effects during reheating may lead to a dramatic growth of axion perturbations. We perform lattice calculations in two models in which the Peccei-Quinn field participates in inflation. We find that the growth of axion perturbations is such that the Peccei-Quinn symmetry is restored for an axion decay constant $f_A\lesssim 10^{16}$-$10^{17}$ GeV, leading to an over-abundance of dark matter, unless $f_A\lesssim 2\times 10^{11}$ GeV. For $f_A\gtrsim 10^{16}$-$10^{17}$ GeV we still find a large growth of axion perturbations at low momentum, such that a naive extrapolation to CMB scales suggests a violation of the isocurvature bounds.

arXiv comment30 pages, 22 figures

References in corpus (67)

• Planck 2018 results. X. Constraints on inflation
• The Standard Model Higgs boson as the inflaton
• Towards the Theory of Reheating After Inflation
• Inflation Dynamics and Reheating
• New CAST Limit on the Axion-Photon Interaction
• The QCD axion, precisely
• New experimental approaches in the search for axion-like particles
• Adiabatic and entropy perturbations from inflation
• Exploring the String Axiverse with Precision Black Hole Physics
• Astrophysical Axion Bounds
• Extended Search for the Invisible Axion with the Axion Dark Matter Experiment
• On the Naturalness of Higgs Inflation
• Structure of Resonance in Preheating after Inflation
• A Revised Experimental Upper Limit on the Electric Dipole Moment of the Neutron
• Power-counting and the Validity of the Classical Approximation During Inflation
• Any Light Particle Search II -- Technical Design Report
• Cosmic Axion Spin Precession Experiment (CASPEr)
• First results from a microwave cavity axion search at 24 micro-eV
• The ORGAN Experiment: An axion haloscope above 15 GHz
• Adiabatic Modes in Cosmology
• Axion Cosmology Revisited
• Conceptual Design of the International Axion Observatory (IAXO)
• First Results from ABRACADABRA-10 cm: A Search for Sub-$\mu$eV Axion Dark Matter
• Axion Cosmology and the Energy Scale of Inflation
• Axions from Strings: the Attractive Solution
• More Axions from Strings
• LATTICEEASY: A Program for Lattice Simulations of Scalar Fields in an Expanding Universe
• Standard Model-Axion-Seesaw-Higgs Portal Inflation. Five problems of particle physics and cosmology solved in one stroke
• First Results from Axion Haloscope at CAPP around 10.7 $\mu$eV
• Effective theories of single field inflation when heavy fields matter
• Unifying inflation with the axion, dark matter, baryogenesis and the seesaw mechanism
• Parametric Amplification of Metric Fluctuations During Reheating in Two Field Models
• Is there a supernova bound on axions?
• General Relativistic effects in preheating
• Search for axion-like dark matter with ferromagnets
• On the importance of heavy fields during inflation
• Search for invisible axion dark matter of mass m${}_a=43\mu$eV with the QUAX--$a\gamma$ experiment
• Metric preheating and limitations of linearized gravity
• Axiogenesis
• Higgs Scalaron Mixed Inflation
• A new experimental approach to probe QCD axion dark matter in the mass range above 40$\mu$eV
• Isocurvature bounds on axions revisited
• Scalaron the healer: removing the strong-coupling in the Higgs- and Higgs-dilaton inflations
• Enhanced Supernova Axion Emission and its Implications
• Massless Metric Preheating
• The scaling density of axion strings
• Restoring the sting to metric preheating
• The Art of Lattice and Gravity Waves from Preheating
• Axion Predictions in $SO(10)\times U(1{)}_{\mathrm{PQ}}$ Models
• Unification, Proton Decay and Topological Defects in non-SUSY GUTs with Thresholds
• Unifying inflation and dark matter with the Peccei-Quinn field: observable axions and observable tensors
• Backreaction and the Parametric Resonance of Cosmological Fluctuations
• Quantum and Classical Behavior in Interacting Bosonic Systems
• Global cosmic string networks as a function of tension
• Dynamical Emergence of Scalaron in Higgs Inflation
• Flat Dark Matter Dominated Models with Hybrid Adiabatic Plus Isocurvature Initial Conditions
• Axion mass prediction from minimal grand unification
• Higgs inflation and suppression of axion isocurvature perturbation
• Primordial gravitational waves in a minimal model of particle physics and cosmology
• Axion Inflation, Proton Decay and Leptogenesis in $SU(5)\times U(1{)}_{PQ}$
• Axion Dark Matter, Proton Decay and Unification
• Accidental SO(10) axion from gauged flavour
• A minimal non-supersymmetric SO(10) model with Peccei--Quinn symmetry
• CLUSTEREASY: A Program for Simulating Scalar Field Evolution on Parallel Computers
• Peccei-Quinn Symmetry and Nucleon Decay in Renormalizable SUSY SO(10)
• Several Problems in Particle Physics and Cosmology Solved in One SMASH
• Axion Model with Intermediate Scale Fermionic Dark Matter

Cited by in corpus (7)

• Revealing the Cosmic History with Gravitational Waves
• Axion Quality Problem Alleviated by Non-Minimal Coupling to Gravity
• Revisiting Isocurvature Bounds on the Minimal QCD Axion
• Minimal solution to the axion isocurvature problem from a nonminimal coupling
• Searching for dilaton fields in the Ly$\alpha$ forest
• Higgs-dilaton model revisited: can dilaton act as QCD axion?
• Ultraviolet Sensitivity of Peccei-Quinn Inflation