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Tahereh Azizi

Tahereh Azizi

Academic rank: Assistant Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Science
Address:
Phone: 35302480

Research

Title
Reheating after an Inflationary Universe from a Perfect Fluid and Its Comparison with Observational Data
Type
JournalPaper
Keywords
Cosmic inflation; Observational cosmology, Reheating
Year
2021
Journal The Astrophysical Journal
DOI
Researchers Fakhri sadat Mirtalebian ، Kourosh Nozari ، Tahereh Azizi

Abstract

We present the reheating constraints on an inflationary universe induced by perfect fluid models. Starting with the descriptions for the observables of the scalar field inflationary models in the reconstructed methods, we outline the procedure of perfect fluid inflationary models through these methods to calculate the inflationary observables and reheating. We show that the reheating e-folds number Nre and the reheating final temperature Tre are bound depending on the finite range of reasonable values of wre. By restricting the equation-of-state parameter in the reheating stage, - < wre < 1/3, more stringent constraints can be derived for the model’s parameter space of perfect fluid. These constraints correspond to viable values of the scalar spectral index ns and tensor-to-scalar ratio r, released by Planck2018 observational data.