Non-Gaussianity from Warm Inflation in the Weak Dissipative Regime

Details Non-Gaussianity from Warm Inflation in the Weak Dissipative Regime Non-Gaussianity from Warm Inflation in the Weak Dissipative Regime

2003-10-16

arxiv.org/abs/astro-ph/0310460v1

Astronomy and Astrophysics

Astrophysics

Submission to the Proceedings of XVth Recontres de Blois "New Results in Cosmology and the Coherence of the Standard Model"

Scientific paper

The generic prediction for the perturbations generated during slow--roll, single--field inflation, as they appear in the cosmic microwave background (CMB), is a flat, close--to--Gaussian spectrum. We calculate the general solution for a warm inflationary scenario with weak dissipation, reviewing the dissipative dynamics of the two--fluid system, and calculate the bispectrum of the gravitational field fluctuations generated in the case where dissipation of the vacuum potential during inflation is the mechanism for structure formation, but is the sub--dominant effect in the dynamics of the scalar field.

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