A flat FLRW model with dynamical A as function of matter and geometry
We revisit the evolution of the scale factor in a flat FLRW spacetime with a new generalized decay rule for the dynamic Lambda-term under modified theories of gravity. It analyzes certain cosmological parameters and examines their behaviours in this generalized setting which includes several decay l...
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Elsevier
2021
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my.um.eprints.267492022-04-15T07:31:01Z http://eprints.um.edu.my/26749/ A flat FLRW model with dynamical A as function of matter and geometry Pradhan, Anirudh Avik, De Loo, Tee How Maurya, Dinesh Chandra QB Astronomy We revisit the evolution of the scale factor in a flat FLRW spacetime with a new generalized decay rule for the dynamic Lambda-term under modified theories of gravity. It analyzes certain cosmological parameters and examines their behaviours in this generalized setting which includes several decay laws in the literature. We have also obtained observational constraints on various model parameters and estimated the present values of cosmological parameters {Omega(m0), Omega(Lambda 0), q(0), t(0), omega(0)} and have discussed with various observational results. Finite time past and future singularities in this model are also discussed. Elsevier 2021-11 Article PeerReviewed Pradhan, Anirudh and Avik, De and Loo, Tee How and Maurya, Dinesh Chandra (2021) A flat FLRW model with dynamical A as function of matter and geometry. New Astronomy, 89. ISSN 13841076, DOI https://doi.org/10.1016/j.newast.2021.101637 <https://doi.org/10.1016/j.newast.2021.101637>. 10.1016/j.newast.2021.101637 |
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QB Astronomy Pradhan, Anirudh Avik, De Loo, Tee How Maurya, Dinesh Chandra A flat FLRW model with dynamical A as function of matter and geometry |
description |
We revisit the evolution of the scale factor in a flat FLRW spacetime with a new generalized decay rule for the dynamic Lambda-term under modified theories of gravity. It analyzes certain cosmological parameters and examines their behaviours in this generalized setting which includes several decay laws in the literature. We have also obtained observational constraints on various model parameters and estimated the present values of cosmological parameters {Omega(m0), Omega(Lambda 0), q(0), t(0), omega(0)} and have discussed with various observational results. Finite time past and future singularities in this model are also discussed. |
format |
Article |
author |
Pradhan, Anirudh Avik, De Loo, Tee How Maurya, Dinesh Chandra |
author_facet |
Pradhan, Anirudh Avik, De Loo, Tee How Maurya, Dinesh Chandra |
author_sort |
Pradhan, Anirudh |
title |
A flat FLRW model with dynamical A as function of matter and geometry |
title_short |
A flat FLRW model with dynamical A as function of matter and geometry |
title_full |
A flat FLRW model with dynamical A as function of matter and geometry |
title_fullStr |
A flat FLRW model with dynamical A as function of matter and geometry |
title_full_unstemmed |
A flat FLRW model with dynamical A as function of matter and geometry |
title_sort |
flat flrw model with dynamical a as function of matter and geometry |
publisher |
Elsevier |
publishDate |
2021 |
url |
http://eprints.um.edu.my/26749/ |
_version_ |
1735409452923748352 |
score |
13.251813 |