Anti Stiff LRS Bianchi Type I String Cosmological Model in General Relativity
| Authors | Rakhi Mathus1, Laxmi Poonia1, Sunil Kumawat2 |
| Affiliations |
1Department of Mathematics and Statistics, Manipal University Jaipur, India 2Department of Mathematics and Statistics, JPIS Jaipur, India |
| Е-mail | rakhi.221051021@muj.manipal.edu |
| Issue | Volume 17, Year 2025, Number 6 |
| Dates | Received 01 August 2025; revised manuscript received 17 December 2025; published online 19 December 2025 |
| Citation | Rakhi Mathus, Laxmi Poonia, et al., J. Nano- Electron. Phys. 17 No 6, 06014 (2025) |
| DOI | https://doi.org/10.21272/jnep.17(6).06014 |
| PACS Number(s) | 98.80.Cq, 98.80.Jk, 04.20. – q |
| Keywords | Bianchi, Cosmology, General relativity, LRS model, Ant stiff fluid, String cosmology. |
| Annotation |
In this work, we have explored anti-stiff LRS Bianchi type-I string cosmological model within the framework of general relativity. The general solution of nonlinear Einstein’s field equations for the cosmological model has been obtained by using suitable condition on metric components A = B^1/n Assuming an anti-stiff fluid i.e. p + ρ = 0, where ρ represents the rest energy density and p denotes the pressure of the fluid. This assumption helps in simplifying the complex nonlinear equations and facilitates the derivation of a viable cosmological solution. We analyse the physical and structural properties of the model, and explain its expansion behaviour, anisotropy and overall dynamical evolution. The study provides insight into the role of string cosmology in the boarder context of general relativity and contributes to the understanding of early universe dynamics under the influence of an anti-stiff fluid. The physical and structural features of the model are discussed in this model. |
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