Charged gravastars in <i>f</i> ( <i>R</i> , <i>G</i> , <i>T</i> ) gravity

The article explores the properties of gravitational vacuum stars, or gravastars, within the framework of f( R, G, T) gravity, where R represents the Ricci scalar, G denotes the Gauss–Bonnet invariant, and T stands for the trace of the energy–momentum tensor. Incorporating the effects of electric charge, the study employs suitable numerical techniques to solve the highly nonlinear differential equations governing the system. For a well-established cosmological model in f( R, G, T) gravity, the internal structure of gravastars is analyzed in terms of three distinct regions: the core, the shell, and the exterior. The mass–radius relationship of the charged gravastar is graphically illustrated, highlighting its evolution within this modified gravity scenario.