Publication : t02/116

Inflationary models inducing non-Gaussian metric fluctuations

Bernardeau F. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE)
Uzan J.-P. (Laboratoire de Physique Théorique (LPT), CNRS, UMR 8627, Université de Paris-Sud XI, F-91405 Orsay, France)
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.
Année de publication : 2003
Revue : Phys. Rev. D 67 121301 (2003)
DOI : 10.1103/PhysRevD.67.121301
Preprint : arXiv:astro-ph/0209330
Lien :
PACS : 98.80.-k, 98.80.Cq, 98.80.Es, 98.65.Dx
Numéro Exterieur : Code Bibliographique ADS : 2003PhRvD..67l1301B
Langue : Anglais
NB : [Rapid Commun.]

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