Subquark pregeometry and the possible origin of our universe

A fundamental theory of particles and fields which is based on the two principles (of relativity and of quantum) and the two hypotheses (of the fundamental length and of compositeness) is proposed. It effectively reproduces not only gauge theories for the strong and electroweak forces of the fundamental fermions (leptons and quarks) but general relativity for gravity at low energies. At extremely high energies, it predicts an infinite series of nonlinear interactions of the fundamental fermions, the gauge bosons and the space-time metric. A possible explanation of the big bang of our Universe is also presented in this supergrand unified theory. (Auth.)