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Primordial density perturbation in the curvaton scenario.

Research output: Contribution to journalJournal article

Article number023503
<mark>Journal publication date</mark>10/01/2003
<mark>Journal</mark>Physical Review D – Particles and Fields
Issue number2
Number of pages13
<mark>Original language</mark>English


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.

Bibliographic note

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