Dynamics of Peccei-Quinn Breaking Field after Inflation and Axion Isocurvature Perturbations

  title={Dynamics of Peccei-Quinn Breaking Field after Inflation and Axion Isocurvature Perturbations},
  author={Keisuke Harigaya and Masahiro Ibe and Masahiro Kawasaki and Tsutomu. T. Yanagida},
  journal={arXiv: High Energy Physics - Phenomenology},
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… 

Figures from this paper

Strongly broken Peccei-Quinn symmetry in the early Universe
We consider QCD axion models where the Peccei-Quinn symmetry is badly broken by a larger amount in the past than in the present, in order to avoid the axion isocurvature problem. Specifically we
Adiabatic suppression of the axion abundance and isocurvature due to coupling to hidden monopoles
A bstractThe string theory predicts many light fields called moduli and axions, which cause a cosmological problem due to the overproduction of their coherent oscillation after inflation. One of the
Dynamical solution to the axion domain wall problem
The domain wall problem and the isocurvature problem restrict possible combinations of axion models and inflation models. In this paper, we considered a new mechanism which solves those problems by
Axion isocurvature perturbations in low-scale models of hybrid inflation
The QCD axion solves the strong CP problem and represents an attractive particle candidate for cold dark matter (CDM). However, quantum fluctuations of the axion field during inflation easily result
This work proposes a mechanism called axiogenesis where the cosmological excess of baryons over antibaryons is generated from the rotation of the QCD axion, and explores the connections with new physics at the LHC and future colliders and with axion dark matter.
Axion Isocurvature and Magnetic Monopoles.
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 the order of the unification scale
Cosmic perturbations, baryon asymmetry, and dark matter from the minimal supersymmetric standard model
Scalar fields in the minimal supersymmetric standard model may have large field values during inflation. Because of approximate global symmetry, it is plausible that the phase directions of them are
Baryon Asymmetry and Cosmological Moduli / Polonyi Problem
Supersymmetric models generally contain long-lived particles that could cause cosmological difficulties. In particular, moduli/Polonyi fields dominate total energy of the universe as coherent


Domain wall and isocurvature perturbation problems in axion models
Axion models have two serious cosmological problems, domain wall and isocurvature perturbation problems. In order to solve these problems we investigate the Linde's model in which the field value of
Cosmic strings from preheating
A limit on the inflationary energy density from axion isocurvature fluctuations
Inflationary axion cosmology.
Consideration of fluctuations induced during inflation severely constrains the latter alternative to Peccei-Quinn symmetry breaking, and it is shown that the former can be evaded.
Axions in inflationary cosmology
Unifying inflation and dark matter with the Peccei-Quinn field: observable axions and observable tensors
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