The DIVE Model: A Unified Dark Sector via Quantum Decoherence and Vacuum Phase Transition

The missing mass problem has driven decades of search for collisionless dark matter particles, yet direct detection efforts have yielded null results. In this paper, we propose a paradigm shift: the Dynamical Interaction-driven Vacuum Event (DIVE) model. We posit that dark matter is not an independent elementary particle, but rather the localized macroscopic rendering of the quantum vacuum’s effective mass. This phase transition is dynamically triggered when the baryonic gauge flux crosses a critical holographic threshold (F ≥ Fc). At the galactic scale, the DIVE model naturally reproduces the empirical successes of the Tully-Fisher relation and modified Newtonian dynamics purely from vacuum state reduction. At high-energy astrophysical scales, thermodynamic vacuum screening elegantly explains the spatial offset in the Bullet Cluster, while localized vacuum annihilation accurately accounts for the strictly spherical Galactic Center GeV Excess. Furthermore, through high-resolution 2D N-body simulations, we demonstrate that the macroscopic Cosmic Web—including discrete halos and perfectly empty cosmic voids—dynamically emerges from a pure baryonic plasma without pre-existing dark matter seeds. Driven by the primordial photon decoupling and self-sustained by baryonic accretion, the DIVE model provides a highly causal, unified framework for the dark sector, ultimately bridging semiclassical gravity and quantum decoherence.