The mathematical formalism of quantum mechanics has achieved tremendous success, yet its ontological foundations — including the essence of the wave function, the mechanism behind the measurement problem, and the origin of nonlocal correlations — have long remained unresolved. This paper proposes the fundamental field theory, which takes the complex field as the basic degree of freedom satisfying the standard bosonic commutation relation, ^ =. Starting from this commutation relation, we derive the uncertainty principle and establish the action of the fundamental field. The Schrödinger equation is obtained under the non-relativistic limit. We explain the measurement problem and present the dynamical equation for wave function collapse via the trigger perturbation mechanism. Meanwhile, quantum entanglement is interpreted based on the nonlocal nature of the fundamental field. This paper also conducts a comparative analysis between the proposed model, the GRW model and the Penrose model, and puts forward four experimentally testable theoretical predictions. This manuscript serves as a companion to the classical branch focusing on S³ topological dynamics. The two papers jointly form a full theoretical description of physical systems. The S³ topological domain manuscript focuses on classical and semiclassical topics such as cosmology, gravitational waves and power laws of the four fundamental interactions, while this work centers on quantum mechanics fundamentals, measurement collapse and quantum entanglement. The two manuscripts are interconnected through the - mapping. The fundamental field theory does not negate quantum mechanics; instead, it complements quantum mechanics with a complete ontological foundation.
Q Zhao (Mon,) studied this question.