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Kourosh Nozari

Kourosh Nozari

Academic rank: Professor
ORCID: https://orcid.org/0000-0003-4368-5823
Education: PhD.
ScopusId: 9276301800
HIndex:
Faculty: Science
Address: Department of Theoretical Physics, Faculty of Basic Sciences, University of Mazandaran, P. O. Box 47416-95447, Babolsar, Iran
Phone: 01135302482

Research

Title
α-Attractors and reheating in a nonminimal inflationary model
Type
JournalPaper
Keywords
Nonminimal derivative inflation; α-attractor; E-model; T-model
Year
2020
Journal INTERNATIONAL JOURNAL OF MODERN PHYSICS D
DOI
Researchers Raheleh Shojaee ، Kourosh Nozari ، Farhad Darabi

Abstract

We study α-attractor models with both E-model and T-model potential in an extended Nonminimal Derivative (NMD) inflation where a canonical scalar field and its derivatives are nonminimally coupled to gravity. We calculate the evolution of perturbations during this regime. Then by adopting inflation potentials of the model we show that in the large N and small α limit, the value of the scalar spectral index ns and tensor-to-scalar ratio r are universal. Next, we study reheating after inflation in this formalism. We obtain some constraints on the model’s parameter space by adopting the results with Planck 2018.