Creating perturbations from a decaying field during inflation
arXiv:1210.7818 · doi:10.1103/PhysRevD.87.083501
Abstract
Typically the fluctuations generated from a decaying field during inflation do not contribute to the large scale structures. In this paper we provide an example where it is possible for a field which slowly rolls and then decays during inflation to create all the matter perturbations with a slightly red-tilted spectral index, with no isocurvature perturbations, and with a possibility of a departure from Gaussian fluctuations.
4 pages, 2 figures, revision accepted by PRD
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- Visible sector inflation and the right thermal history in light of Planck data
- Traces of a Heavy Field in Gravitational Waves
- Cosmological perturbations from a Spectator field during inflation
- Spectator fields and their imprints on the Cosmic Microwave Background