Re-evaluation and Paradigm Correction of the Classical Mass-Energy Relation Based on the PFUSRC Double-Cone Topology

The mass-energy equivalence formula E=mc² has long been regarded as the universal law governing mass-energy conversion, but it contains three fundamental deficiencies: over-reliance on constant rest mass and invariant light speed, deviated physical interpretation, and narrow application domain. Based on the PFUSRC four-dimensional double-cone topological cosmic framework, this paper shows that real mass is field-dependent floating equivalent mass that varies with field intensity, density and potential gradient, while traditional light speed is only the characteristic energy transmission velocity in equilibrium regions. The cosmos is divided into three domains: divergent expansion, waist equilibrium and convergent aggregation. A universal primitive energy formula is derived with complete field adaptation. The classical formula is only an empirical tool for potential difference conversion, while the new theory reveals the real mechanism of energy release and mass-state evolution. The universe is an open energetic system with exogenous energy supply and internal circulation; expansion has a ceiling, and high-density regions can maintain long-term steady states. The new framework systematically corrects the classical mass-energy theory and establishes a complete self-consistent system for cosmic energy evolution.