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Mixed inflaton and curvaton perturbations

David Langlois·Filippo Vernizzi
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Abstract

A recent variant of the inflationary paradigm is that the ``primordial'' curvature perturbations come from quantum fluctuations of a scalar field, subdominant and effectively massless during inflation, called the ``curvaton'', instead of the fluctuations of the inflaton field. We consider the situation where the primordial curvature perturbations generated by the quantum fluctuations of an inflaton and of a curvaton field are of the same order of magnitude. We compute the curvature perturbation and its spectrum in this case and we discuss the observational consequences.

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David Langlois, Filippo Vernizzi. 2004-09-14. Mixed inflaton and curvaton perturbations. https://doi.org/10.1103/physrevd.70.063522

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