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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...

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Autores principales: Rathore, Shivangi, Singh, S. Surendra
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
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.
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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
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