Presence of a Bulk Viscous Universe within f(R, T) Gravity

Year : 2024 | Volume :01 | Issue : 01 | Page : –
By

Lokesh Kumar Sharma,

  1. Assistant Professor GLA University, Mathura Uttar Pradesh India

Abstract

This paper offers a comprehensive analysis of a bulk viscous universe in the context of f(R, T) gravity, where (R) signifies the Ricci scalar and (T) represents the trace of the energy-momentum tensor. The primary objective of our work is to get explicit solutions to the modified field equations by using a power-law scale factor representation. With this method, we have obtained functions of cosmic time and redshift for the Hubble parameter and the deceleration parameter.
To validate our theoretical model, we have estimated the current values of these cosmological parameters using observational data. Specifically, we have utilized observational Hubble data and Supernova Type Ia (SN Ia) datasets to constrain the model. At the 1σ confidence level, we have determined that the present value of the deceleration parameter, q0 = −0.30 ± 0.05, and the model parameter, m = 0.70 ± 0.02.
Additionally, we have examined the energy requirements in this cosmological framework and performed an Om(z) analysis within the context of the anisotropic Locally Rotationally Symmetric (LRS) Bianchi type I model. Our results show a strong agreement between our theoretical model and the observational data. This alignment offers valuable new insights into the characteristics and dynamics of a bulk viscous universe in modified gravity theories, highlighting the model’s relevance and precision in explaining cosmological observations.

Keywords: Cosmological parameters; Bulk viscosity; f (R, T) gravity; LRS Bianchi-I space-time, Gravitational field theories.

[This article belongs to International Journal of Universe(iju)]

How to cite this article: Lokesh Kumar Sharma. Presence of a Bulk Viscous Universe within f(R, T) Gravity. International Journal of Universe. 2024; 01(01):-.
How to cite this URL: Lokesh Kumar Sharma. Presence of a Bulk Viscous Universe within f(R, T) Gravity. International Journal of Universe. 2024; 01(01):-. Available from: https://journals.stmjournals.com/iju/article=2024/view=157845

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Regular Issue Subscription Original Research
Volume 01
Issue 01
Received July 10, 2024
Accepted July 22, 2024
Published July 23, 2024
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