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Mixed inflaton and curvaton perturbations

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arxiv astro-ph/0403258 v2 pith:FECTM6RD submitted 2004-03-11 astro-ph gr-qchep-phhep-th

David Langlois , Filippo Vernizzi This is my paper · ORCID
classification astro-phgr-qchep-phhep-th
keywords curvatoncurvaturefieldfluctuationsinflatonperturbationsprimordialquantum
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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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Cited by 2 Pith papers

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  1. Axion Perturbations: A General Analytical Treatment

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    Axion dark-matter perturbations are determined entirely by the homogeneous axion background's dependence on its initial misalignment angle, plus Weinberg's universal adiabatic-mode term.

  2. Tilt and Tensor-to-Scalar Ratio in Multi-Scalar Field Inflation: Non-Sum-Separable Case

    gr-qc 2024-12 reject novelty 3.0 of 10

    A two-field chaotic inflation model with a kinetic-potential coupling can in principle lower ns and r, but the paper's analytic formulas miscompute the correction and its quoted parameter ranges are fitted rather than...

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