Complete Detectable Spacetime Geometry: A Unified, Finite, and Unitary Theory of Fundamental Interactions from Particle Physics to Cosmology via Closure Dynamics

Complete Detectable Spacetime Geometry (CDSG) is a unified framework that derives all fundamental physics — from particle interactions to cosmic expansion — from a single principle. The theory proposes that spacetime itself is governed by a universal closure condition, which forces a special gauge field to develop a vacuum condensate. This condensate makes quantum field theory finite at all energies, spontaneously breaks electroweak symmetry without introducing elementary scalar particles, and generates the observed masses of elementary particles through geometric overlaps of quantum fields. Using only the structure of detectable spacetime, CDSG reproduces the complete Standard Model, including the precise mixing patterns of quarks and neutrinos, and predicts their values from just a few geometric inputs. The same condensate that gives mass to the W and Z bosons also drives cosmic inflation in the early universe and produces the tiny dark energy observed today, solving the cosmological constant problem without fine-tuning. Gravity emerges naturally as the gauge theory of closure, with Newton’s constant set by the condensate scale. The framework is mathematically consistent: it eliminates unphysical ghost particles, preserves unitarity through BRST symmetry, and remains well-defined at arbitrarily high energies due to an ultraviolet fixed point. No new particles beyond the Standard Model and gravitons are introduced, and the twenty-eight free parameters of the Standard Model are reduced to about ten inputs related to spacetime geometry. CDSG thus synthesizes decades of prior work into a single, testable theory. It unifies electroweak breaking, flavor physics, quantum gravity, inflation, and dark energy as different manifestations of closure dynamics within detectable spacetime, offering specific numerical predictions for particle and cosmological observables that can be checked against current and future experiments.