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:
Journal Article
Journal or Publication Title:
Journal of Cosmology and Astroparticle Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3103
Subjects:
?? cmbr theoryinflationphysics of the early universepower spectrumastronomy and astrophysics ??
ID Code:
9622
Deposited By:
Users 49 not found.
Deposited On:
17 Jun 2008 10:16
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2024 11:42