Layer Superposition Theory: Coupling Constants, Spacetime Geometry, and the GR-QM Interface

We propose a framework in which fundamental interactions emerge from the overlap of layer functions defined in an internal space Y 3. The effective coupling constant gi0 = Ψ∗ i(y) Ψ0(y) dS ∂(Layer 0) is derived from a minimal ansatz: the interaction Lagrangian is taken to be a total derivative, the boundary is defined by the inter-layer flux support, and Gauss’s theorem is applied exactly. We do not claim this ansatz is unique; we claim it is the minimal structure consistent with the axiom Thinning occurs and with the observed hierarchy of coupling constants. The framework derives the Einstein field equations from the LST action, iden- tifies N = 3 as the minimum internal dimension for nontrivial antisymmetric com- posites, and quantifies three predictions against current experimental bounds. The Λ(t) ∝t−1 prediction implies an 84% deviation from Λ = const at z = 0.5, directly testable by DESI and Euclid. One axiom. Fourteen predictions. The ansatz is minimal.