Space-Time Quantization, Elementary Particles and Dark Matter

Relativity and quantum mechanics are generalized by considering a finite limit for the smallest measurable distance. The value a of this quantum of length is unknown, but it is a universal constant, like c and h. It depends on the total energy content of our universe (hc/2a) and physical laws are modified when it is finite. The eigenvalues of (x, y, z, ct) coordinates are integer or half-integer multiples of a. This yields four new quantum numbers, specifying "particle states" in terms of phase differences at the smallest possible scale. They account for all known elementary particles and predict the existence of neutral ones that could constitute dark matter particles. This theory is thus experimentally testable.