Primordial density perturbation in the curvaton scenario.

Lyth, David H. and Ungarelli, Carlo and Wands, David (2003) Primordial density perturbation in the curvaton scenario. Physical Review D – Particles and Fields, 67 (2). ISSN 1550-2368

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We analyze the primordial density perturbation when it is generated by a “curvaton” field different from the inflaton. In some cases this perturbation may have large isocurvature components, fully correlated or anticorrelated with the adiabatic component. It may also have a significant non-Gaussian component. All of these effects are calculated in a form which will enable direct comparison with current and forthcoming observational data.

Item Type:
Journal Article
Journal or Publication Title:
Physical Review D – Particles and Fields
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This paper explained how the curvaton scenario can generate a non-gaussian primordial perturbation which will probably be observable in the forseeable future. The standard scenario cannot produce non-gaussianity at this level, therefore we have an almost certain way of distinguishing between the scenarios. 179 citations (SPIRES). RAE_import_type : Journal article RAE_uoa_type : Physics
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15 Jul 2008 09:38
Last Modified:
19 Sep 2023 00:06