Observational constraints on warm inflation in loop quantum cosmology

By incorporating quantum aspects of gravity, Loop Quantum Cosmology (LQC) provides a self-consistent extension of the inflationary scenario, allowing for modifications in the primordial inflationary power spectrum with respect to the standard General Relativity one. We investigate such modifications...

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Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2019-10, Vol.2019 (10), p.66-66
Main Authors: Benetti, Micol, Graef, L.L., Ramos, Rudnei O.
Format: Article
Language:English
Subjects:
Big Bang theory
Computer simulation
Cosmic microwave background
Cosmology
Inflation (cosmology)
Markov chains
Mathematical models
Parameters
Relativity
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Summary:By incorporating quantum aspects of gravity, Loop Quantum Cosmology (LQC) provides a self-consistent extension of the inflationary scenario, allowing for modifications in the primordial inflationary power spectrum with respect to the standard General Relativity one. We investigate such modifications and explore the constraints imposed by the Cosmic Microwave Background (CMB) Planck Collaboration data on the Warm Inflation (WI) scenario in the LQC context. We obtain useful relations between the dissipative parameter of WI and the bounce scale parameter of LQC. We also find that the number of required e-folds of expansion from the bounce instant till the moment the observable scales crossed the Hubble radius during inflation can be smaller in WI than in CI. In particular, we find that this depends on how large is the dissipation in WI, with the amount of required e-folds decreasing with the increasing of the dissipation value. {}Furthermore, by performing a Monte Carlo Markov Chain analysis for the considered WI models, we find good agreement of the model with the data. This shows that the WI models studied here can explain the current observations also in the context of LQC.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2019/10/066