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Dynamical system analysis of interacting dark energy in LRS Bianchi type I cosmology
This paper deals with an interacting dark energy (DE) model in Locally rotationally symmetric (LRS) Bianchi type I cosmological model with scalar field in the form of an exponential potential. We reduce the transformation equations to an independent system of ordinary differential equations by appro...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10460452/ https://www.ncbi.nlm.nih.gov/pubmed/37634034 http://dx.doi.org/10.1038/s41598-023-40457-2 |
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author | Rathore, Shivangi Singh, S. Surendra |
author_facet | Rathore, Shivangi Singh, S. Surendra |
author_sort | Rathore, Shivangi |
collection | PubMed |
description | This paper deals with an interacting dark energy (DE) model in Locally rotationally symmetric (LRS) Bianchi type I cosmological model with scalar field in the form of an exponential potential. We reduce the transformation equations to an independent system of ordinary differential equations by appropriate alteration of the variables to setup the complementary dynamical system and after that we also calculate the critical points of the system. We get six critical points when our coupling parameter is positive. And we get two critical points when our coupling parameter is negative. And dark energy behaves like a perfect fluid for all the critical points. And after that we analyzed all the critical points by calculating the eigenvalues of the Jacobian matrix and we find out that out of these eight critical points, six critical points are stable, which shows that our Universe is accelerating. And two (2) critical points are unstable. We also present the phase plot analysis. |
format | Online Article Text |
id | pubmed-10460452 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-104604522023-08-28 Dynamical system analysis of interacting dark energy in LRS Bianchi type I cosmology Rathore, Shivangi Singh, S. Surendra Sci Rep Article This paper deals with an interacting dark energy (DE) model in Locally rotationally symmetric (LRS) Bianchi type I cosmological model with scalar field in the form of an exponential potential. We reduce the transformation equations to an independent system of ordinary differential equations by appropriate alteration of the variables to setup the complementary dynamical system and after that we also calculate the critical points of the system. We get six critical points when our coupling parameter is positive. And we get two critical points when our coupling parameter is negative. And dark energy behaves like a perfect fluid for all the critical points. And after that we analyzed all the critical points by calculating the eigenvalues of the Jacobian matrix and we find out that out of these eight critical points, six critical points are stable, which shows that our Universe is accelerating. And two (2) critical points are unstable. We also present the phase plot analysis. Nature Publishing Group UK 2023-08-26 /pmc/articles/PMC10460452/ /pubmed/37634034 http://dx.doi.org/10.1038/s41598-023-40457-2 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Rathore, Shivangi Singh, S. Surendra Dynamical system analysis of interacting dark energy in LRS Bianchi type I cosmology |
title | Dynamical system analysis of interacting dark energy in LRS Bianchi type I cosmology |
title_full | Dynamical system analysis of interacting dark energy in LRS Bianchi type I cosmology |
title_fullStr | Dynamical system analysis of interacting dark energy in LRS Bianchi type I cosmology |
title_full_unstemmed | Dynamical system analysis of interacting dark energy in LRS Bianchi type I cosmology |
title_short | Dynamical system analysis of interacting dark energy in LRS Bianchi type I cosmology |
title_sort | dynamical system analysis of interacting dark energy in lrs bianchi type i cosmology |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10460452/ https://www.ncbi.nlm.nih.gov/pubmed/37634034 http://dx.doi.org/10.1038/s41598-023-40457-2 |
work_keys_str_mv | AT rathoreshivangi dynamicalsystemanalysisofinteractingdarkenergyinlrsbianchitypeicosmology AT singhssurendra dynamicalsystemanalysisofinteractingdarkenergyinlrsbianchitypeicosmology |