Constraining warm inflation with the cosmic microwave background

Lisa M H Hall*, Ian G. Moss, Arjun Berera

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalPhysics Letters B
Issue number1-2
Publication statusPublished - 3 Jun 2004


  • 98.80.-k
  • 98.80.Cq
  • 98.80.Es


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