Quantum Gravitational Suppression Theory: A Unified and Testable Framework for Quantum Gravity

We present Quantum Gravitational Suppression Theory (QGST), a framework that connects quantum mechanics with classical gravitational physics through an energy-dependent gravitational coupling constant. In this theory, the effective gravitational constant is given by: G_eff(E) = G * [1 - (E0^2)/(E^2 + E0^2)] where G is Newton’s gravitational constant, E represents the local energy scale (applicable to systems ranging from black hole collapse to inflationary conditions), and E0 (approximately 10^18–10^19 GeV) denotes the quantum–classical transition threshold. As the local energy density increases, the effective gravitational coupling decreases, naturally preventing singularities during gravitational collapse and leading to stable, finite-density cores in black holes. This energy-dependent suppression mechanism also modifies black hole evaporation, potentially resulting in stable remnants that resolve the information paradox. QGST makes explicit predictions across several domains, including measurable amplitude suppression in high-frequency gravitational waves (above ~500 Hz), distinctive modifications in the cosmic microwave background anisotropies at high multipoles, and testable effects in laboratory-based quantum systems. By eliminating the need for extra fields or additional dimensions, this theory demonstrates how classical gravity can emerge directly from quantum principles, offering a minimalist yet robust candidate in the search for a quantum theory of gravity.