Research on Spacetime Discretization Model and Quantum Gravity Framework Based on 1.944 mm Macroscopic Lattice(RVDT-11)

The core dilemma of quantum gravity theory lies in the inherent incompatibility between the continuous spacetime assumption of general relativity and the discretization rules of quantum mechanics. Mainstream spacetime discretization models all restrict the characteristic scale to the unobservable Planck order, resulting in a long-term lack of experimental verification pathways for relevant theories. This paper proposes a novel spacetime discretization scheme: taking the macroscopic lattice as the fundamental structure of spacetime, with the a = 1.944mm macroscopic lattice constant defined as , which serves as the minimum indivisible unit scale of three-dimensional space. On this basis, a quantization framework of gravity is constructed on the discrete spacetime substrate. By replacing continuous differentiation with discrete difference operators, this study completes the discrete reconstruction of the gravitational field equation, and proves that the model can naturally eliminate the spacetime singularity problem in general relativity and realize the natural quantization of gravitational action. Compared with traditional quantum gravity theories, the core breakthrough of this model is that it elevates the characteristic scale of spacetime discretization from the Planck scale to the macroscopically detectable range, providing theoretical possibility for the direct experimental observation of quantum gravity effects. This paper also systematically sorts out the unsolved problems of the model in terms of topological structure, relativistic covariance and experimental scheme design, and clarifies the core directions for subsequent theoretical improvement and empirical verification.