Exploring late-time cosmic acceleration: A study of a linear f(T) cosmological model using observational data
Zhadyranova A. Koussour M. Bekkhozhayev S. Zhumabekova V. Rayimbaev J.
July 2024Elsevier B.V.
Physics of the Dark Universe
2024#45
Understanding the evolution of dark energy poses a significant challenge in modern cosmology, as it is responsible for the universes accelerated expansion. In this study, we focus on a specific f(T) cosmological model and analyze its behavior using observational data, including 31 data points from the CC dataset, 1048 points from the Pantheon SNe Ia samples, and 6 points from the BAO dataset. By considering a linear f(T) model with an additional constant term, we derive the expression for the Hubble parameter as a function of cosmic redshift for non-relativistic pressureless matter. We obtain the best-fit values for the Hubble constant, H0, and the model parameters α and β, indicating a stable model capable of explaining late-time cosmic acceleration without invoking a dark energy component. This is achieved through modifying field equations to account for the observed accelerated expansion of the universe.
Cosmology , f(T) gravity , Observational data , Scalar perturbation
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General and Theoretical Physics Department, L. N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Department of Physics, University of Hassan II Casablanca, Morocco
Theoretical and Nuclear Physics Department, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
New Uzbekistan University, Mustaqillik Ave. 54, Tashkent, 100007, Uzbekistan
University of Tashkent for Applied Sciences, Gavhar Str. 1, Tashkent, 100149, Uzbekistan
National University of Uzbekistan, Tashkent, 100174, Uzbekistan
General and Theoretical Physics Department
Department of Physics
Theoretical and Nuclear Physics Department
New Uzbekistan University
University of Tashkent for Applied Sciences
National University of Uzbekistan
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