Light Scalars and the Generation of Density Perturbations During Preheating or Inflaton Decay
arXiv:astro-ph/0412007 · doi:10.1016/j.physletb.2005.01.096
Abstract
Reheating after inflation can occur through inflaton decay or efficient parametric resonant production of particles from the oscillation of the inflaton. If the particles produced interact with scalars that were light during inflation, then significant super-horizon density perturbations are generated during this era. These perturbations can be highly non-Gaussian.
6 pages, 4 figures. Clarifying discussion added. Conclusions unchanged
References in corpus (11)
- A new mechanism for generating density perturbations from inflation
- Turbulent Thermalization
- Non-Gaussianities in models with a varying inflaton decay rate
- Cosmological Perturbations From Inhomogeneous Reheating, Freeze-Out, and Mass Domination
- Modulated fluctuations from hybrid inflation
- Cosmological perturbations from varying masses and couplings
- Challenges in generating density perturbations from a fluctuating inflaton coupling
- Precision Electroweak Data and the Mixed Radion-Higgs Sector of Warped Extra Dimensions
- Evolution of primordial perturbations and a fluctuating decay rate
- Cosmological density perturbations from perturbed couplings
- Inhomogeneous reheating scenario with low scale inflation and/or MSSM flat directions
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- On the generation of density perturbations at the end of inflation
- Preheating and the non-gaussianity of the curvature perturbation
- Modulated Perturbations from Instant Preheating after new Ekpyrosis
- Fluctuating annihilation cross sections and the generation of density perturbations
- Constraints on variations in inflaton decay rate from modulated preheating
- Affleck-Dine baryogenesis with modulated reheating
- Deriving super-horizon curvature perturbations from the dynamics of preheating