The existence of a mass gap in Yang-Mills theory is one of the most profound unsolved problems in mathematical physics. Classical gauge theory predicts massless force carriers due to scale invariance, yet experiments confirm that nuclear forces are short-ranged, implying a non-zero mass gap (Δ > 0). Conventional approaches have failed to provide a rigorous analytic derivation of this mass in the continuous limit. In this paper, we present an exact proof of the mass gap using the framework of Rough Operator Algebra (ROA). We propose that the quantum vacuum is not a smooth manifold but a geometric state with a fundamental roughness index αᵥac = 1/2. By applying the Geometric Uncertainty Principle (E · α = κ), we demonstrate that the non-trivial roughness of the vacuum imposes a minimum energy cost for existence. We derive the mass gap formula Δ = 2κ, identifying κ with the dynamic scale ΛQCD. This proves that mass is a topological necessity generated by the intrinsic roughness of spacetime, resolving the conflict between gauge invariance and mass generation.
Lee Sung-gil (Fri,) studied this question.