Cosmographic analysis of a closed bouncing universe with the varying cosmological constant in f(R, T) gravity-Reference-Cited by-同舟云学术

Cosmographic analysis of a closed bouncing universe with the varying cosmological constant in f(R, T) gravity

Published:2022-11-01 Issue:11 Volume:100 Page:475-484
ISSN:0008-4204
Container-title:Canadian Journal of Physics
language:en
Short-container-title:Can. J. Phys.

Author:

Bhardwaj Vinod Kumar¹,Pradhan Anirudh²^ORCID,Ahmed Nasr³⁴,Shaker A.A.⁴^ORCID

Affiliation:

1. Department of Mathematics, Institute of Applied Sciences & Humanities, GLA University, Mathura 281 406, Uttar Pradesh, India

2. Centre for Cosmology, Astrophysics and Space Science (CCASS), GLA University, Mathura 281 406, Uttar Pradesh, India

3. Mathematics Department, Faculty of Science, Taibah University, Tayba, Medina 42353, Saudi Arabia

4. Astronomy Department, National Research Institute of Astronomy and Geophysics, Helwan, Cairo, 11421, Egypt

Abstract

Modelling of matter bounce in f( R, T) gravity has been presented with no violation of the null energy condition. Only a closed universe with negative pressure is allowed in good agreement with some recent observations that favour a universe with positive curvature. Our results agree with some recent works in which a combination of positive curvature and vacuum energy leads to non-singular bounces with no violation of the null energy condition. The stability of the model has been discussed. The cosmographic parameters are developed for the derived model to explain the accelerated expansion of the universe.

Publisher

Canadian Science Publishing

Subject

General Physics and Astronomy

Link

https://cdnsciencepub.com/doi/pdf/10.1139/cjp-2021-0352

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