Dynamics of Peccei-Quinn breaking field after inflation and axion isocurvature perturbations

Journal Article · Sun Nov 01 04:00:00 EST 2015 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2015/11/003· OSTI ID:22525202

Harigaya, Keisuke; Ibe, Masahiro; Kawasaki, Masahiro ^[1]

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1. ICRR, University of Tokyo, Kashiwa, Chiba 277-8582 (Japan)

The Peccei-Quinn mechanism suffers from the problem of the isocurvature perturbations. The isocurvature perturbations are suppressed if the Peccei-Quinn breaking scale is large during inflation. The oscillation of the Peccei-Quinn breaking field after inflation, however, leads to the formation of domain walls due to the parametric resonance effect. In this paper, we discuss the evolution of the Peccei-Quinn breaking field after inflation in detail, and propose a model where the parametric resonance is ineffective and hence domain walls are not formed. We also discuss consistency of our model with supersymmetric theory.

• OSTI ID: 22525202
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 11 Vol. 2015; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
AXIONS
COSMOLOGICAL INFLATION
DISTURBANCES
INFLATIONARY UNIVERSE
OSCILLATIONS
RESONANCE
SUPERSYMMETRY