Derivation of Fundamental Constants from the (6+2)-Dimensional Structure of Spacetime

We present a derivation of fundamental physical constants from a spacetime with (6+2) dimensions: six spatial and two temporal. Each temporal dimension corresponds to a three-dimensional spatial manifold, producing a natural 6+2 structure. From this geometric framework, key physical constants emerge without free parameters. The model derives the fine structure constant, the Planck-electron mass ratio, and the Planck constant from geometric and topological properties of spacetime. Additional results include a formula for quantum decoherence times and a unified interpretation of decoherence and wavefunction collapse as elastic relaxation processes in spacetime. Key Results • Fine structure constantα ≈ 1/137.05 (error