Cosmological perturbations in warm inflationary models with viscous pressure

Details Cosmological perturbations in warm inflationary models with viscous pressure Cosmological perturbations in warm inflationary models with viscous pressure

2007-03-23

arxiv.org/abs/astro-ph/0703604v1

Phys.Rev.D75:083518,2007

Astronomy and Astrophysics

Astrophysics

20 pages, to be published in the Physcal Review D

Scientific paper

10.1103/PhysRevD.75.083518

Scalar and tensorial cosmological perturbations generated in warm inflationary scenarios whose matter-radiation fluid is endowed with a viscous pressure are considered. Recent observational data from the WMAP experiment are employed to restrict the parameters of the model. Although the effect of this pressure on the matter power spectrum is of the order of a few percent, it may be detected in future experiments.

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