The Cosmic Gravitational Field Theory: A Unified Framework for Dark Phenomena with Observational Validation

We present a novel approach to the dark sector phenomena in cosmology and astrophysics—the Cosmic Gravitational Field (CGF) theory. This framework introduces a gravity amplification field that enhances the standard gravitational interaction without requiring dark matter. We demonstrate that a simplified version of this theory, referred to as the Simple CGF model, successfully explains galaxy rotation curves while maintaining connections to cosmological acceleration. Using rotation curve data from 20 galaxies, we perform a comprehensive statistical comparison between the Simple CGF model and the standard ΛCDM paradigm. Our analysis shows that the Simple CGF model provides statistically comparable fits to ΛCDM, as quantified by the Akaike Information Criterion, while requiring fewer free parameters. These results suggest that the CGF approach offers a compelling alternative to the standard cosmological model, providing a unified explanation for phenomena traditionally attributed to both dark matter and dark energy, while maintaining consistency with fundamental physical principles.