Behaviours of rip cosmological models in $f(Q,C)$ gravity
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909183635357696 |
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| author | Samaddar, Amit Singh, S. Surendra Muhammad, Shah Zotos, Euaggelos E. |
| author_facet | Samaddar, Amit Singh, S. Surendra Muhammad, Shah Zotos, Euaggelos E. |
| contents | In this study, the Universe's rip cosmology theories have been provided for the $f(Q,C)$ gravity theory, where $Q$ and $C$ stand for the non-metricity scalar and boundary term. We assumed $f(Q,C)=αQ^{n}+βC$ and analyzed the nature of the physical parameters for the Little Rip, Big Rip and Pseudo Rip models. In the LR and PR models, the EoS parameter exhibits phantom characteristics but remains closely aligned with the $Λ$CDM line. After investigating the energy conditions, we recognised that our model violates the strong energy constraint. Avoiding singularity situations has been noted in all of these accelerated models. The characteristics of the jerk and snap parameters have been investigated. Our model provides an effective description of the Universe's evolutionary history and fits well with contemporary cosmic data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_17616 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Behaviours of rip cosmological models in $f(Q,C)$ gravity Samaddar, Amit Singh, S. Surendra Muhammad, Shah Zotos, Euaggelos E. General Relativity and Quantum Cosmology High Energy Physics - Theory In this study, the Universe's rip cosmology theories have been provided for the $f(Q,C)$ gravity theory, where $Q$ and $C$ stand for the non-metricity scalar and boundary term. We assumed $f(Q,C)=αQ^{n}+βC$ and analyzed the nature of the physical parameters for the Little Rip, Big Rip and Pseudo Rip models. In the LR and PR models, the EoS parameter exhibits phantom characteristics but remains closely aligned with the $Λ$CDM line. After investigating the energy conditions, we recognised that our model violates the strong energy constraint. Avoiding singularity situations has been noted in all of these accelerated models. The characteristics of the jerk and snap parameters have been investigated. Our model provides an effective description of the Universe's evolutionary history and fits well with contemporary cosmic data. |
| title | Behaviours of rip cosmological models in $f(Q,C)$ gravity |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2404.17616 |