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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
α-attractor and reheating in a model with noncanonical scalar fields
Type
JournalPaper
Keywords
Cosmological inflation; noncanonical scalar field; reheating; α-attractor; observational constraints.
Year
2018
Journal INTERNATIONAL JOURNAL OF MODERN PHYSICS D
DOI
Researchers Narges Rashidi Talouki ، Kourosh Nozari

Abstract

We consider two noncanonical scalar fields [tachyon and Diarc–Born–Infeld (DBI)] with E-model type of the potential. We study cosmological inflation in these models to find possible α-attractors. We show that similar to the canonical scalar field case, in both tachyon and DBI models there is a value of the scalar spectral index in small α limit which is just a function of the e-folds number. However, the value of ns in DBI model is somewhat different from the other ones. We also compare the results with Planck2015 TT, TE, EE+lowP data. The reheating phase after inflation is studied in these models which gives some more constraints on the model parameters.