Modulated preheating and isocurvature perturbations

@inproceedings{Enqvist2013ModulatedPA,
  title={Modulated preheating and isocurvature perturbations},
  author={Kari Enqvist and Stanislav Rusak},
  year={2013}
}
  • Kari Enqvist, Stanislav Rusak
  • Published 2013
  • Physics
  • We consider a model of preheating where the coupling of the inflaton to the preheat field is modulated by an additional scalar field which is light during inflation. We establish that such a model produces the observed curvature perturbation analogously to the modulated reheating scenario. The contribution of modulated preheating to the power spectrum and to non-Gaussianity can however be significantly larger compared to modulated perturbative reheating. We also consider the implications of the… CONTINUE READING

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