Cosmological perturbations in warm inflationary models with viscous pressure

Sergio Del Campo, Ramón Herrera, Diego Pavón

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Abstract

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 Wilkinson Microwave Anisotropy Probe 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. © 2007 The American Physical Society.
Original languageEnglish
Article number083518
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume75
Issue number8
DOIs
Publication statusPublished - 17 Apr 2007

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    Del Campo, S., Herrera, R., & Pavón, D. (2007). Cosmological perturbations in warm inflationary models with viscous pressure. Physical Review D - Particles, Fields, Gravitation and Cosmology, 75(8), [083518]. https://doi.org/10.1103/PhysRevD.75.083518