Table of Contents:
  • <p>This preprint revisits Einstein’s Unified Field Theory from the standpoint of phase geometry introduced in the Koida constant framework (DOI: 10.5281/zenodo.15609830).</p> <p> </p> <p>By analyzing curvature constraints in dynamical configurations, this study highlights how Einstein’s geometric unification attempts can be reinterpreted using structural invariants. Specifically, the paper shows how the effective coherence bound Λₑ = –π/e provides a natural limit for unified interactions.</p> <p> </p> <p>This work is a conceptual extension of the previous publication on the Koida constant, aiming to integrate gravitational and quantum descriptions under a common phase-geometric constraint.</p>