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Narges Rashidi Talouki

Narges Rashidi Talouki

Academic rank: Assistant Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Science
Address: University of Mazandaran
Phone: 01135302401

Research

Title
Perturbation, non-Gaussianity, and reheating in a Gauss-Bonnet α-attractor model
Type
JournalPaper
Keywords
Cosmological Inflation
Year
2017
Journal PHYSICAL REVIEW D
DOI
Researchers Kourosh Nozari ، Narges Rashidi Talouki

Abstract

Motivated by α-attractor models, in this paper we consider a Gauss-Bonnet inflation with an E-modeltype of potential.We consider the Gauss-Bonnet coupling function to be the same as the E-model potential. In the small α limit, we obtain an attractor at r ¼ 0 as expected, and in the large α limit, we recover the Gauss-Bonnet model with potential and coupling function of the form ϕ2n. We study perturbations and non-Gaussianity in this setup, and we find some constraints on the model’s parameters in comparison with PLANCK data sets. We study also the reheating epoch after inflation in this setup. For this purpose, we seek the number of e-folds and temperature during reheating epoch. These quantities depend on the model’s parameter and the effective equation of state of the dominating energy density in the reheating era. We find some observational constraints on these parameters.