Yuanji Field Theory: Neutron Topological Structure and Unified Explanation of Nuclear Physics Phenomena

Based on the first-principles axiom system of the classical transverse wave field of Yuanji Field, this paper establishes a self-consistent topological field theory framework for nucleon structure, nuclear interaction, and macroscopic nuclear properties. Starting from the fundamental axioms of transverse wave divergence-free constraint, phase single-valuedness, minimum energy principle, and deformation energy convention, we derive the steady-state solution of the 3D orthogonal vortex coherent superposition topological soliton with total winding number n=3, and construct the composite topological structure model of the neutron on this basis. We endogenously explain the core properties of nuclear force, the stability of two-nucleon systems, the evolution law of nuclear binding energy, the topological nature of shell structure, and nuclear decay processes. From the strict expansion of the total deformation energy functional, we derive the analytical expression of the nucleon-nucleon interaction, whose calculation results are in good agreement with the experimental binding energy values of deuteron and α particles. Based on the neutron metastable topological model with radial phase modulation, we clarify the topological nature of weak decay phenomena such as β decay, give the definition of the dual-antiphase open helical topology of neutrinos, and realize a unified explanation for the stability difference between free neutrons and intranuclear neutrons. Meanwhile, we construct an effective interaction calculation framework for multi-nucleon systems, and prove its mathematical compatibility with the general angular momentum basis vectors in nuclear physics. This framework provides a new research paradigm for nuclear physics phenomena based on field theory topological constraints, and all the derived results are highly consistent with existing experimental observations.