Quark stars in f(R, T) gravity: mass-to-radius profiles and observational data

Abstract This study explores the gravity theory, which introduces a coupling between matter and curvature, through the simplest linear functional form . We derive the modified Einstein field equations and conservation equations for this theory and then apply this framework to study the structural properties of quark stars (QSs) composed of interacting quark matter, considering perturbative QCD corrections and color superconductivity. By solving the modified Tolman-Oppenheimer-Volkoff equations, we investigate the mass-radius relation, stability criteria, and energy conditions of QSs. Our results indicate that the gravity significantly influences the properties of QSs, leading to deviations from General Relativity. The analysis is consistent with recent observational data, suggesting that the modified gravity framework could provide viable models for the study of compact stars.

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