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Constraining warm inflation with the cosmic microwave background

Lookup NU author(s): Lisa Hall, Professor Ian MossORCiD


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We discuss the spectrum of scalar density perturbations from warm inflation when the friction coefficient Γ in the inflaton equation is dependent on the inflaton field. The spectral index of scalar fluctuations depends on a new slow-roll parameter constructed from Γ. A numerical integration of the perturbation equations is performed for a model of warm inflation and gives a good fit to the WMAP data for reasonable values of the model's parameters. © 2004 Published by Elsevier B.V.

Publication metadata

Author(s): Hall LMH, Moss IG, Berera A

Publication type: Article

Publication status: Published

Journal: Physics Letters B

Year: 2004

Volume: 589

Issue: 1-2

Pages: 1-6

ISSN (print): 0370-2693

ISSN (electronic): 1873-2445

Publisher: Elsevier BV


DOI: 10.1016/j.physletb.2004.03.044


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