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A cosmological model by gravitational decoupling in a non-minimal coupling theory
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A cosmological model by gravitational decoupling in a non-minimal coupling theory The accelerating expansion of the universe, the behavior of compact astrophysical objects, and the quest to unify gravity with the other fundamental forces continue to drive modern cosmology into new theoretical territories. One such pathway lies in exploring modified theories of gravity, particularly those involving non-minimal coupling (NMC) between matter and curvature. These theories, by extending the standard formulation of General Relativity (GR), allow for richer dynamics that can accommodate dark energy, explain cosmic inflation, and support more complex stellar configurations. In this study, we present a cosmological model derived via the gravitational decoupling method within the context of a non-minimally coupled scalar-tensor theory of gravity . The approach taken here is innovative: we employ the Minimal Geometric Deformation (MGD) technique to decouple the Einstein field equations in...
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