Inflation in mimetic f(R,T) gravity

Bhattacharjee, Snehasish (2022) Inflation in mimetic f(R,T) gravity. New Astronomy, 90. pp. 1-8. ISSN 1384-1076

[img] Text
New_Astronomy.pdf - Published Version
Available under License Creative Commons Attribution.

Download (786kB)

Abstract

In this paper, we employ mimetic f(R,T) gravity coupled with Lagrange multiplier and mimetic potential to yield viable inflationary cosmological solutions consistent with latest Planck and BICEP2/Keck Array data. We present here three viable inflationary solutions of the Hubble parameter (H) represented by H(N)=(AexpβN+BαN)γ, H(N)=(AαN+BlogN)γ, and H(N)=(AeβN+BlogN)γ, where A, β, B, α, γ are free parameters, and N represents the number of e-foldings. We carry out the analysis with the simplest minimal f(R,T) function of the form f(R,T)=R+χT, where χ is the model parameter. We report that for the chosen f(R,T) gravity model, viable cosmologies are obtained compatible with observations by conveniently setting the Lagrange multiplier and the mimetic potential. © 2021 Elsevier B.V.

[error in script]
IITH Creators:
IITH CreatorsORCiD
Item Type: Article
Uncontrolled Keywords: 04.50.Kd; 98.80.-K; 98.80.Cq; 98.80.Es; Inflation; Mimetic gravity; Modified gravity; Observational constraints
Subjects: Physics
Divisions: Department of Physics
Depositing User: . LibTrainee 2021
Date Deposited: 29 Jul 2022 10:00
Last Modified: 29 Jul 2022 10:00
URI: http://raiithold.iith.ac.in/id/eprint/10018
Publisher URL: http://doi.org/10.1016/j.newast.2021.101657
OA policy: https://v2.sherpa.ac.uk/id/publication/17103
Related URLs:

    Actions (login required)

    View Item View Item
    Statistics for RAIITH ePrint 10018 Statistics for this ePrint Item