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Higher order contributions to the primordial non-Gaussianity

Zaballa, I. and Rodriguez, Y. and Lyth, D. H. (2006) Higher order contributions to the primordial non-Gaussianity. Journal of Cosmology and Astroparticle Physics.

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Abstract

In this paper we calculate additional contributions to the part of the non-Gaussianity of the primordial curvature perturbation ζ that comes from the three-point correlator of the field perturbations. We estimate this contribution using the following models for the origin of ζ: single-component inflation, multicomponent chaotic inflation, a two-component 'hybrid' inflationary model and the curvaton scenario. In all of these models, the additional contributions to the primordial non-Gaussianity considered here are too small to ever be detected.

Item Type: Article
Journal or Publication Title: Journal of Cosmology and Astroparticle Physics
Uncontrolled Keywords: cosmological perturbation theory ; inflation ; physics of the early universe
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 9638
Deposited By: Mr Michael Dunne
Deposited On: 17 Jun 2008 14:08
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:40
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/9638

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