Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-06-06
Phys.Rev. D62 (2000) 083517
Astronomy and Astrophysics
Astrophysics
12 pages, Latex, Accepted by Phys Rev D., minor changes
Scientific paper
10.1103/PhysRevD.62.083517
We investigate the phenomenology of warm inflation and present generic results about the evolution of the inflaton and radiation fields. The general conditions required for warm inflation to take place are derived and discussed. A comprehensive approach is presented for the generation of thermally induced adiabatic and isocurvature perturbations and the amplitude of their spectra calculated. In addition we derive the ratio of tensor-to-scalar perturbations and find the spectral indices for adiabatic, isocurvature and tensor perturbations formed in the warm inflationary era. These results are presented in a simplified and compact approach that is generally applicable. Our results are illustrated by inflation models with polynomial and exponential potentials. We compare our analytic results against numerical models and find excellent agreement. Finally, presently available data is used to put constraints on warm inflation and we discuss how near--future observations may distinguish the warm inflationary scenario from standard supercooled inflation. The main observable difference is the different scalar-to- tensor ratio, and that the consistency relation between this and the slope of tensor perturbations does not hold for warm inflation.
Berera Arjun
Taylor Andy N.
No associations
LandOfFree
Perturbation Spectra in the Warm Inflationary Scenario does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Perturbation Spectra in the Warm Inflationary Scenario, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perturbation Spectra in the Warm Inflationary Scenario will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-482242