The Octacell Universe Model , An Eightfold Parallel Universe System Defined by Observed Ratio, Tesseract Geometry, and Matter-Antimatter Symmetry

This paper proposes the Eight-Cell Universe Model, a new cosmological framework based on the four fundamental discrete symmetries: charge conjugation, parity, time reversal, and spin. The model demonstrates that the universe consists of eight symmetric sub-universes, including four positive universes and four anti-universes. It naturally derives the 1:7 energy density ratio observed in cosmology, uniformly explains dark energy, dark matter, Hubble tension, cosmic singularity, horizon problem, flatness, and baryon asymmetry, and provides 67 quantitative and verifiable predictions. The model is self-consistent, parameter-free, and compatible with all reliable observational data.