SAIP2025

Cosmological model in f(R,G,T) gravity

Not scheduled

1h

Solomon Mahlangu House (University of the Witwatersrand, Johannesburg)

Oral Presentation Track D1 - Astrophysics Astrophysics & Space Science

Speaker

Aroonkumar Beesham (University of Zululand)

Description

We study an FLRW cosmological model in $f(R,\mathcal{G}, T)$ gravity by assuming a specific form of the deceleration parameter. A Markov Chain Monte Carlo (MCMC) analysis is performed using the Cosmic Chronometer and Pantheon datasets to determine the parameters of the model. A viable model is obtained which exhibits a transition from deceleration to acceleration and which satisfies observational constraints. The various cosmographic parameters such as the deceleration, jerk and statefinder parameters are analysed and illustrated. A comparison is made with the standard $\Lambda$CDM model. Finally the energy conditions and equation of state are discussed. By studying this model, we get further knowledge and understanding of the dynamics and evolution of the cosmos.