Axion Isocurvature and Magnetic Monopoles

Abstract

We propose a simple mechanism to suppress axion isocurvature fluctuations using hidden sector magnetic monopoles. This allows for the Peccei-Quinn scale to be of order the unification scale consistently with high scale inflation.

13 pages

References in corpus (7)

• Cosmological parameters from combining the Lyman-alpha forest with CMB, galaxy clustering and SN constraints
• Isocurvature bounds on axions revisited
• The Relic Abundance of Long-lived Heavy Colored Particles
• Suppressing the QCD Axion Abundance by Hidden Monopoles
• Resonant conversions of QCD axions into hidden axions and suppressed isocurvature perturbations
• Higgs inflation and suppression of axion isocurvature perturbation
• Relaxing Isocurvature Bounds on String Axion Dark Matter

Cited by in corpus (32)

• The Stochastic Axion Scenario
• Using the Full Power of the Cosmic Microwave Background to Probe Axion Dark Matter
• Opening up the QCD axion window
• Dark matter from an even lighter QCD axion: trapped misalignment
• Cosmological abundance of the QCD axion coupled to hidden photons
• QCD Axion on Hilltop by a Phase Shift of $\pi$
• Axion dark matter from first-order phase transition, and very high energy photons from GRB 221009A
• Axion Misalignment Driven to the Hilltop
• Cosmic Birefringence Triggered by Dark Matter Domination
• Primordial Black Holes from QCD Axion Bubbles
• Axion Misalignment Driven to the Bottom
• Axion Mass from Magnetic Monopole Loops
• Unified Origin of Axion and Monopole Dark Matter, and Solution to the Domain-wall Problem
• Adiabatic suppression of the axion abundance and isocurvature due to coupling to hidden monopoles
• High-Scale Axions without Isocurvature from Inflationary Dynamics
• Clocking Out Superradiance Limits
• Cosmological effects of Peccei-Quinn symmetry breaking on QCD axion dark matter
• Trapping Effect for QCD Axion Dark Matter
• Axion Isocurvature Perturbations in Low-Scale Models of Hybrid Inflation
• Kick it like DESI: PNGB quintessence with a dynamically generated initial velocity
• QCD Axion Window and False Vacuum Higgs Inflation
• Note on a solution to domain wall problem with the Lazarides-Shafi mechanism in axion dark matter models
• Hidden Monopole Dark Matter via Axion Portal and its Implications for Direct Detection Searches, Beam-Dump Experiments, and the $H_0$ Tension
• Resonant production of dark photons from axion without a large coupling
• Cosmological Perturbations of Axion with a Dynamical Decay Constant
• Revisiting Isocurvature Bounds on the Minimal QCD Axion
• Minimal solution to the axion isocurvature problem from a nonminimal coupling
• Solutions to axion electromagnetodynamics and new search strategies of sub-$\mu$eV axion
• Gravitational capture of magnetic monopoles by primordial black holes in the early universe
• Gravitational waves and monopoles dark matter from first-order phase transition
• Axion production from primordial magnetic fields
• An Analytic Treatment of Underdamped Axionic Blue Isocurvature Perturbations