This study examines isotropic compact structures in the framework of Ricci inverse gravity with a trace term Formula: see text, which introduces anti-curvature scalar and matter-geometry coupling beyond general relativity. This modified theory extends general relativity by introducing an inverse curvature correction alongside a non-minimal coupling between matter and geometry, enabling a deeper understanding of gravitational effects in high-density regimes. Using a static spherically symmetric metric and applying the Karmarkar condition, we derive class-I solutions by fixing one metric potential Formula: see text and determining the other accordingly. The model is applied to known compact stars Formula: see text and Formula: see text and evaluate the unknown constants present in the metric tensors. A detailed analysis of energy density and pressure cocomponent, energy conditions, stability, redshift, and mass-radius relation confirms that the model supports realistic stellar configurations. The results suggest that Ricci inverse gravity with trace term Formula: see text offers a promising extension for modeling dense astrophysical objects.
Ahmad et al. (Wed,) studied this question.