A new scalar induces transient bias to decay CP domain walls from spontaneous CP violation while its oscillations constitute dark matter.
Dynamics of Peccei-Quinn Breaking Field after Inflation and Axion Isocurvature Perturbations
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abstract
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.
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hep-ph 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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Transient Bias for CP Domain Wall Decay and Dark Matter
A new scalar induces transient bias to decay CP domain walls from spontaneous CP violation while its oscillations constitute dark matter.