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Non-Gaussianity and cosmic uncertainty in curvaton-type models

Lyth, D. H. (2006) Non-Gaussianity and cosmic uncertainty in curvaton-type models. Journal of Cosmology and Astroparticle Physics.

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Abstract

In curvaton-type models, observable non-Gaussianity of the curvature perturbation would come from a contribution of the form (δσ)2, where δσ is Gaussian. I analyse this situation allowing δσ to be scale dependent. The actual curvaton model is considered in more detail than before, including its cosmic uncertainty and anthropic status. The status of curvaton-type models after WMAP (Wilkinson microwave anisotropy probe) year three data is considered.

Item Type: Article
Journal or Publication Title: Journal of Cosmology and Astroparticle Physics
Uncontrolled Keywords: CMBR theory ; inflation ; physics of the early universe ; power spectrum
Subjects: UNSPECIFIED
Departments: Faculty of Science and Technology > Physics
ID Code: 9622
Deposited By: Mr Michael Dunne
Deposited On: 17 Jun 2008 11:16
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:40
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/9622

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