FLRW Universe in f(R,Lm) Gravity with Equation of State Parameter

  • Bhupendra Kumar Shukla Department of Mathematics, Govt. College Bandri Sagar, India
  • R.K. Tiwari Department of Mathematics, Govt. Model Science College Rewa, India
  • D. Sofuoğlu Department of Physics, Istanbul University Vezneciler, Fatih, Istanbul, Turkey https://orcid.org/0000-0002-8842-7302
  • A. Beesham Department of Mathematical Sciences, University of Zululand, Kwa-Dlangezwa, South Africa; Faculty of Natural Sciences, Mangosuthu University of Technology, Jacobs, South Africa; National Institute for Theoretical and Computational Sciences, South Africa https://orcid.org/0000-0001-5350-6396
DOI: https://doi.org/10.26565/2312-4334-2023-4-48
Keywords: f(R,Lm) gravity, Dark energy, Acceleration of universe, Equation of state parameter

Abstract

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.

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Published
2023-12-02
Cited
How to Cite
Shukla, B. K., Tiwari, R., Sofuoğlu, D., & Beesham, A. (2023). FLRW Universe in f(R,Lm) Gravity with Equation of State Parameter. East European Journal of Physics, (4), 376-389. https://doi.org/10.26565/2312-4334-2023-4-48
Issue
No. 4 (2023): East European Journal of Physics
Section
Original Papers

Copyright (c) 2023 Bhupendra Kumar Shukla, R.K. Tiwari, D. Sofuoğlu, A. Beesham

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