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Inflationary models inducing non-Gaussian metric fluctuations

Francis Bernardeau·Jean-Philippe Uzan
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Abstract

We construct explicit models of multi-field inflation in which the primordial metric fluctuations do not necessarily obey Gaussian statistics. These models are realizations of mechanisms in which non-Gaussianity is first generated by a light scalar field and then transferred into curvature fluctuations. The probability distribution functions of the metric perturbation at the end of inflation are computed. This provides a guideline for designing strategies to search for non-Gaussian signals in future CMB and large scale structure surveys.

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Francis Bernardeau, Jean-Philippe Uzan. 2002-09-17. Inflationary models inducing non-Gaussian metric fluctuations. https://doi.org/10.1103/physrevd.67.121301

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