Dark energy and cosmic evolution: A study in f(R,T) gravity

IF 10.2 4区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Journal of High Energy Astrophysics Pub Date : 2025-03-28 DOI:10.1016/j.jheap.2025.100374

N. Myrzakulov , S.H. Shekh , Anirudh Pradhan , Archana Dixit

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引用次数: 0

Abstract

In the context of

f (R, T)

gravity theory for the flat Friedmann-Lemaitre–Robertson–Walker (FLRW) model, the accelerating expansion of the universe is investigated using a specific form of the emergent Hubble parameter. Datasets from

H (z)

, Type Ia supernovae (SNIa), and Baryon Acoustic Oscillations (BAO) are used to constrain the model and identify the ideal parameter values in order to evaluate the statistical significance of

f (R, T)

gravity. The best-fit parameters are derived by solving the modified Friedmann equations through a MCMC analysis. These parameters are used to compute the equation of state, statefinders, energy conditions, and the

(ω - ω^{'})

plane. Furthermore, the evolution of kinematic cosmographic parameters is examined. The findings provide significant behavior and features of dark energy models. Our comprehension of the dynamics and evolution of the universe is improved by this study, which also advances our understanding of dark energy and how it shapes the universe. Also, a key outcome of our study is the demonstration that

f (R, T)

gravity can account for the Hubble tension through an evolving

H_{0}

, in agreement with recent findings in modified gravity. Our results provide a significant contribution to the ongoing discussion of modified gravity models and their role in explaining cosmic acceleration, offering an alternative perspective to the standard ΛCDM paradigm.

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来源期刊

Journal of High Energy Astrophysics Earth and Planetary Sciences-Space and Planetary Science

CiteScore

9.70

自引率

5.30%

发文量

审稿时长

65 days

期刊介绍： The journal welcomes manuscripts on theoretical models, simulations, and observations of highly energetic astrophysical objects both in our Galaxy and beyond. Among those, black holes at all scales, neutron stars, pulsars and their nebula, binaries, novae and supernovae, their remnants, active galaxies, and clusters are just a few examples. The journal will consider research across the whole electromagnetic spectrum, as well as research using various messengers, such as gravitational waves or neutrinos. Effects of high-energy phenomena on cosmology and star-formation, results from dedicated surveys expanding the knowledge of extreme environments, and astrophysical implications of dark matter are also welcomed topics.