Primordial fluctuations in the warm inflation scenario with a more realistic coarse - grained field

Abstract

I study a semiclassical approach to warm inflation scenario introduced in previous works. In this work, I define the fluctuations for the matter field by means of a new coarse - grained field with a suppression factor G. This field describes the matter field fluctuations on the now observable scale of the universe. The power spectrum for the fluctuations of the matter field is analyzed in both, de Sitter and power - law expansions for the universe. The constraint for the spectral index gives a constraint for the mass of the matter field in the de Sitter expansion and a constraint for the friction parameter in the power - law expansion for the universe.

11 pages, no figures (revtex file)

References in corpus (1)

• Towards a theory of Warm Inflation of the Universe

Cited by in corpus (17)

• Warm Inflation and its Microphysical Basis
• Warm inflation model building
• The warm inflationary universe
• Warm-tachyon Gauss-Bonnet inflation in the light of Planck 2015 data
• Fresh inflation: a warm inflationary model from a zero temperature initial state
• Stochastic gravitoelectromagnetic inflation
• Non-Minimal Warm Inflation and Perturbations on the Warped DGP Brane with Modified Induced Gravity
• Fresh inflation with increasing cosmological parameter
• Fresh inflation and decoherence of super Hubble fluctuations
• On the dissipative non-minimal braneworld inflation
• Warm inflation with back - reaction: a stochastic approach
• Coarse-grained field wave function in stochastic inflation
• Seminal Electromagnetic fields from preinflation
• Warm inflation and scalar perturbations of the metric
• Fresh inflation from five-dimensional vacuum state
• Inflation and nonequilibrium thermodynamics for the fluctuations in the infrared sector
• Warm inflation: Towards a realistic COBE data power spectrum for matter and metric thermal coupled fluctuations