FLRW Universe in f(R,Lm) Gravity with Equation of State Parameter
| Autor: | Bhupendra Kumar Shukla, R.K. Tiwari, D. Sofuoğlu, A. Beesham |
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| Jazyk: | English<br />Russian<br />Ukrainian |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | East European Journal of Physics, Iss 4 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2312-4334 2312-4539 |
| DOI: | 10.26565/2312-4334-2023-4-48 |
| Popis: | Available observational data regarding current cosmological characteristics suggest that the universe is, to a large extent, both isotropic and homogeneous on a large scale. In this study, our objective is to analyze the Friedmann-Lemaitre-Robertson-Walker (FLRW) space-time using a perfect fluid distribution. We specifically investigate the framework of f(R, Lm) gravity within certain constraints. To accomplish this, we concentrate on a specific nonlinear f(R, Lm) model, represented by f(R, Lm) = R/2 + Lαm. The field equations are solved using the equation of state parameter of the form of the Chevallier-Polarski-Linder (CPL) parameterization. The deceleration parameter study finds an accelerating universe at late times. The transition redshift is found to be ztr = 0.89 ± 0.25. Also, we discussed the physical and geometrical properties of the model. |
| Databáze: | Directory of Open Access Journals |
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