Akademik Veri Yönetim Sistemi
International Journal of Modern Physics A, cilt.40, sa.17, 2025 (SCI-Expanded)
This study investigates the cosmological implications of the f ðR; T Þ ¼ R þ 2T gravity model. f ðR; T Þ gravity is a modi¯cation of General Relativity (GR) that introduces a coupling between the Ricci scalar R and the trace of the energy{momentum tensor T. This work provides a comprehensive analysis of the model's predictions using updated observational data, including uncorrelated Baryon Acoustic Oscillations and Cosmic Chronometers. By employing the Markov Chain Monte Carlo technique, we constrain the model parameters, demonstrating their compatibility with current observational datasets. Our ¯ndings reveal that the model naturally extends the CDM model, with the parameter from f ðR; T Þ gravity quantifying deviations from GR. Additionally, we provide a critical discussion on the challenges and limitations of the f ðR; T Þ framework, addressing issues such as observational constraints, systematic uncertainties and model dependencies. This work not only re¯nes parameter constraints for fðR; T Þ gravity, but also bridges the gap between theoretical predictions and observational tests, o®ering a powerful framework for exploring deviations from GR in a cosmological context.