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Curvature and isocurvature pertubations in a three-fluid model of curvaton, decay

Gupta, Sujata and Malik, Karim A. and Wands, David (2004) Curvature and isocurvature pertubations in a three-fluid model of curvaton, decay. Physical Review D, 69 (6). ISSN 1550-7998

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Abstract

We study the evolution of the cosmological perturbations after inflation in curvaton models where the nonrelativistic curvaton decays into both radiation and a cold dark matter component. We calculate the primordial curvature and correlated isocurvature perturbations inherited by the radiation and cold dark matter after the curvaton has decayed. We give the transfer coefficient in terms of the initial curvaton density relative to the curvaton decay rate.

Item Type: Article
Journal or Publication Title: Physical Review D
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 23927
Deposited By: ep_ss_importer
Deposited On: 24 Feb 2009 09:07
Refereed?: Yes
Published?: Published
Last Modified: 21 Oct 2014 11:44
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/23927

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