Homogeneous Barotropic String Cosmology Model of Bianchi Type IV0 in General Relativity
| Authors | Sunil Kumawat , Laxmi Poonia |
| Affiliations |
Department of Mathematics and Statistics, Manipal University Jaipur, India |
| Е-mail | sunilkumawatsir@gmail.com |
| Issue | Volume 15, Year 2023, Number 4 |
| Dates | Received 16 June 2023; revised manuscript received 19 August 2023; published online 30 August 2023 |
| Citation | Sunil Kumawat, Laxmi Poonia, J. Nano- Electron. Phys. 15 No 4, 04017 (2023) |
| DOI | https://doi.org/10.21272/jnep.15(4).04017 |
| PACS Number(s) | 98.80. – k |
| Keywords | Bianchi type VI0, Space-time, General relativity. |
| Annotation |
The homogeneous barotropic string cosmology model has been widely investigated in the context of string theory and other quantum gravity theories. It has been shown that it leads to intriguing and non-trivial predictions for the early universe, such as the development of cosmic strings and the generation of gravitational waves. It is based on the Bianchi IV0 homogeneous generalization of stress-energy-momentum, density, and pressure may be employed to the goal of this study is to find a solution to the Einstein metric field equations. The model is characterised by a collection of non-linear, coupled differential equations that explain the development of the scale factor of the universe, in addition to the energy density and pressure of the string fluid. The model is expanding, not rotating, non-shearing, and has an anisotropic structure. The mathematical underpinnings and physical ramifications of the model of Bianchi Type IV0 in General Relativity are discussed in this study According to the authors, particle density (p) is less than half of the rest energy density while string tension density is larger than half of the rest energy density. When the cosmic time approaches infinity, the cosmic string disappears and the model transforms into a vacuum universe. The results of this study provide insights into the behavior of a model, offering a deeper understanding of the interplay between different physical and kinematical properties and their evolution over time. |
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