A Density-Inversion Cyclic Model (DICM) for Resolving the Hubble Tension and the Nature of Cosmic Expansion

The current standard model of cosmology faces a significant crisis known as the "Hubble Tension"—a persistent discrepancy between early-universe and late-universe measurements of the Hubble constant (H₀). This paper proposes the Density-Inversion Cyclic Model (DICM) as a mechanical solution to this tension. We hypothesize a Critical Density Threshold (rhoc) at which the gravitational behavior of space undergoes a phase transition. In high-density environments, gravity remains traditionally attractive; however, as cosmic voids expand and their density drops below 13 rhoc, the model predicts a Density-Inversion where the vacuum exerts a repulsive "push, " accelerating expansion locally and resolving the H₀ discrepancy without the need for Dark Energy. Furthermore, the theory introduces the Laminar Shred mechanism, describing how the eventual extreme expansion at the universe's edge breaks down matter into its fundamental subatomic components. This "shredding" resets entropy and density, facilitating a cyclic rebound into a new cosmic expansion phase. The DICM offers a testable framework for dark energy-free cosmology and provides new insights into the large-scale structure of cosmic