Unifying inflation and dark matter with the Peccei-Quinn field: observable axions and observable tensors

Abstract

A model of high scale inflation is presented where the radial part of the Peccei-Quinn (PQ) field with a non-minimal coupling to gravity plays the role of the inflaton, and the QCD axion is the dark matter. A quantum fluctuation of $\mathcal{O}(H/2\pi )$ in the axion field will result in a smaller angular fluctuation if the PQ field is sitting at a larger radius during inflation than in the vacuum. This changes the effective axion decay constant, $f_a$, during inflation and dramatically reduces the production of isocurvature modes. This mechanism opens up a new window in parameter space where an axion decay constant in the range $10^{12}\text{ GeV}\lesssim f_a\lesssim 10^{15}\text{ GeV}$ is compatible with observably large $r$. The exact range allowed for $f_a$ depends on the efficiency of reheating. This model also predicts a minimum possible value of $r=10^{-3}$. The new window can be explored by a measurement of $r$ possible with \textsc{Spider} and the proposed CASPEr experiment search for high $f_a$ axions.

7 pages, 4 figures

References in corpus (17)

• The Standard Model Higgs boson as the inflaton
• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• Toward an Understanding of Foreground Emission in the BICEP2 Region
• Inflationary schism after Planck2013
• A joint analysis of Planck and BICEP2 B modes including dust polarization uncertainty
• Isocurvature bounds on axions revisited
• Volume Modulus Inflation and the Gravitino Mass Problem
• Axion cold dark matter in view of BICEP2 results
• Cosmic 21-cm Delensing of Microwave Background Polarization and the Minimum Detectable Energy Scale of Inflation
• New confining force solution of QCD axion domain wall problem
• String theoretic QCD axions in the light of PLANCK and BICEP2
• Grand Unification, Axion, and Inflation in Intermediate Scale Supersymmetry
• How much can we learn about the physics of inflation?
• Axion Models with High Scale Inflation
• Pre-flight integration and characterization of the SPIDER balloon-borne telescope
• Axion Dark Matter with High-Scale Inflation
• Relaxing Isocurvature Bounds on String Axion Dark Matter

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• S.M.A.S.H.E.D.: Standard Model Axion Seesaw Higgs Inflation Extended for Dirac Neutrinos
• Opening up a window on the postinflationary QCD axion
• Minimal solution to the axion isocurvature problem from a nonminimal coupling
• Detectable Gravitational Waves from preheating probes non-thermal Dark Matter
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• Ultraviolet Sensitivity of Peccei-Quinn Inflation
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