Unified Theory of Gradient Phase Field (Part 1): The Origin of Spacetime and Framework of Four Fundamental Forces—— Global Physical Unification, Four Fundamental Forces Framework and Steady-State Cosmological Model Driven by Biorthogonal Projection

中文版本:https://doi.org/10.5281/zenodo.19481568 Taking the original "cosmic fundamental phase (absolute ontology)" as the sole primordial carrier, this paper takes the self-consistency constraint of ontology-biorthogonal velocity projection as the core logical starting point, and uses the local gradient coefficient as the core physical quantity. Without presupposing the formula of special relativity, introducing the basic hypothesis of photons, or adding any unobservable extra concepts, a universal physical theory system applicable to all scales from microscopic quantum to macroscopic cosmos is established through rigorous mathematical derivation. The core achievements include: deriving two strictly symmetric apparent worlds, namely the cosmic phase realm (space field) and the temporal phase realm (time field), via 90° orthogonal projection, proving that relativistic effects are the apparent equivalent results of biorthogonal velocity projection of the gradient phase field; realizing the dimensional unification of all physical quantities in the system, expanding the gravitational derivation from one-dimensional radial to three-dimensional volume integral, and achieving a rigorous mathematical form; the theory naturally satisfies global energy conservation, with orthogonal distribution and dynamic equilibrium of energy between the space field and the time field; abandoning hypotheses such as the Big Bang singularity, dark energy, and dark matter, it perfectly resolves all core contradictions of the ΛCDM model; realizes the ontological unification of the four fundamental interactions, provides self-consistent explanations for full-scale physical puzzles including fermion/boson classification, parity non-conservation in weak interactions, the black hole information paradox, and the origin of cosmic microwave background (CMB), completes the underlying logical unification of relativity and quantum mechanics, and constructs a complete system of fundamental physics and cosmology with no omissions and no contradictions. This study is the first in a series of researches on the Unified Theory of Gradient Phase Field. Subsequent work will be completed in sequence to build a complete theoretical system, from foundational framework to practical implementation. Available Chinese Version: https://doi.org/10.5281/zenodo.19481568