https://doi.org/10.1140/epjp/s13360-024-05294-w
Regular Article
Beyond general relativity: comparative analysis between BDT and f(R, T) with NLDP
Mathematics, Sant Longowal Institute of Engineering and Technology, 148106, Sangrur, Punjab, India
Received:
12
March
2024
Accepted:
20
May
2024
Published online:
6
August
2024
In this study, we explore a space-time model with locally rotationally symmetric (LRS) Bianchi type-I geometry, containing a perfect fluid. The study investigates the dynamics of gravitational theories beyond general relativity (GR), specifically examining Brans–Dicke and f(R, T) theories while incorporating a non-linear deceleration parameter (NLDP). By adopting mathematical formulations, computational techniques, and numerical investigations, the present study explores the implications of these alternative theories on cosmological dynamics and gravitational phenomena, along with a novel form of deceleration parameter (DP) as suggested by Mishra and Chand (Astrophys Space Sci 361:1–10, 2016). The cosmological implications of each theory offer valuable insights into their theoretical foundations and observational consequences.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
