Observational constraint on interacting Tsallis holographic dark energy in logarithmic Brans–Dicke theory
Abstract In this paper, we investigate the dark energy phenomenon by studying the Tsallis holographic dark energy within the framework of Brans–Dicke (BD) scalar–tensor theory of gravity (Brans and Dicke in Phys. Rev. 124:925, 1961). In this context, we choose the BD scalar field $$\phi $$ ϕ as a lo...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-12-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-019-7534-5 |
| _version_ | 1818388224432668672 |
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| author | Y. Aditya Sanjay Mandal P. K. Sahoo D. R. K. Reddy |
| author_facet | Y. Aditya Sanjay Mandal P. K. Sahoo D. R. K. Reddy |
| author_sort | Y. Aditya |
| collection | DOAJ |
| description | Abstract In this paper, we investigate the dark energy phenomenon by studying the Tsallis holographic dark energy within the framework of Brans–Dicke (BD) scalar–tensor theory of gravity (Brans and Dicke in Phys. Rev. 124:925, 1961). In this context, we choose the BD scalar field $$\phi $$ ϕ as a logarithmic function of the average scale factor a(t) and Hubble horizon as the IR cutoff ($$L=H^{-1}$$ L=H-1 ). We reconstruct two cases of non-interacting and interacting fluid (dark sectors of cosmos) scenario. The physical behavior of the models are discussed with the help of graphical representation to explore the accelerated expansion of the universe. Moreover, the stability of the models are checked through squared sound speed $$v_s^2$$ vs2 . The well-known cosmological plane i.e., $$\omega _{de}-\omega ^{\prime }_{de}$$ ωde-ωde′ is constructed for our models. We also include comparison of our findings of these dynamical parameters with observational constraints. It is also quite interesting to mention here that the results of deceleration, equation of state parameters and $$\omega _{de}-\omega ^{\prime }_{de}$$ ωde-ωde′ plane coincide with the modern observational data. |
| first_indexed | 2024-12-14T04:22:26Z |
| format | Article |
| id | doaj.art-91990a53c6f441c882413849a246a506 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-14T04:22:26Z |
| publishDate | 2019-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-91990a53c6f441c882413849a246a5062022-12-21T23:17:17ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522019-12-01791211310.1140/epjc/s10052-019-7534-5Observational constraint on interacting Tsallis holographic dark energy in logarithmic Brans–Dicke theoryY. Aditya0Sanjay Mandal1P. K. Sahoo2D. R. K. Reddy3Department of Mathematics, GMR Institute of TechnologyDepartment of Mathematics, Birla Institute of Technology and Science-PilaniDepartment of Mathematics, Birla Institute of Technology and Science-PilaniDepartment of Applied Mathematics, Andhra UniversityAbstract In this paper, we investigate the dark energy phenomenon by studying the Tsallis holographic dark energy within the framework of Brans–Dicke (BD) scalar–tensor theory of gravity (Brans and Dicke in Phys. Rev. 124:925, 1961). In this context, we choose the BD scalar field $$\phi $$ ϕ as a logarithmic function of the average scale factor a(t) and Hubble horizon as the IR cutoff ($$L=H^{-1}$$ L=H-1 ). We reconstruct two cases of non-interacting and interacting fluid (dark sectors of cosmos) scenario. The physical behavior of the models are discussed with the help of graphical representation to explore the accelerated expansion of the universe. Moreover, the stability of the models are checked through squared sound speed $$v_s^2$$ vs2 . The well-known cosmological plane i.e., $$\omega _{de}-\omega ^{\prime }_{de}$$ ωde-ωde′ is constructed for our models. We also include comparison of our findings of these dynamical parameters with observational constraints. It is also quite interesting to mention here that the results of deceleration, equation of state parameters and $$\omega _{de}-\omega ^{\prime }_{de}$$ ωde-ωde′ plane coincide with the modern observational data.https://doi.org/10.1140/epjc/s10052-019-7534-5 |
| spellingShingle | Y. Aditya Sanjay Mandal P. K. Sahoo D. R. K. Reddy Observational constraint on interacting Tsallis holographic dark energy in logarithmic Brans–Dicke theory European Physical Journal C: Particles and Fields |
| title | Observational constraint on interacting Tsallis holographic dark energy in logarithmic Brans–Dicke theory |
| title_full | Observational constraint on interacting Tsallis holographic dark energy in logarithmic Brans–Dicke theory |
| title_fullStr | Observational constraint on interacting Tsallis holographic dark energy in logarithmic Brans–Dicke theory |
| title_full_unstemmed | Observational constraint on interacting Tsallis holographic dark energy in logarithmic Brans–Dicke theory |
| title_short | Observational constraint on interacting Tsallis holographic dark energy in logarithmic Brans–Dicke theory |
| title_sort | observational constraint on interacting tsallis holographic dark energy in logarithmic brans dicke theory |
| url | https://doi.org/10.1140/epjc/s10052-019-7534-5 |
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