Universal Inverse Inflation: Black Hole Interior Dynamics = Cosmology

We discuss a general principle of inverse inflation, which extends and reformulates conventional cosmological inflation as a universal inflation potential that activates in high mass/energy regions, thereby unifying black hole interior dynamics with cosmological expansion. Universal inverse inflation is modeled as a matter-shrinking process, consistent with Wetterich’s shrinking universe cosmological dynamics, and indistinguishable by local observation. We derive that the time-reversed dual solutions of black holes and white holes in general relativity imply that inverse inflation corresponds to the white hole solution with a time-reversed metric signature, connected to a past manifold; whereas from the black hole's external reference frame, the black hole solution projects into the future, forming a 2D+t holographic projection of the embedded universe's information. Based on momentum conservation, the model predicts complete CPT-conjugation at the black hole-white hole connection manifold, resulting in a white hole composed entirely of relative antiparticles and electromagnetic radiation. This model thus forms a family of singularity-free, CPT-conjugated, expanding universes inside black holes, thereby creating a hierarchical, fractal-like multiverse, and implying that cosmology is essentially the study of black hole interiors, reinterpreting Big Bang background radiation as the remnant signal of a white hole, which is connected to a black hole in our embedding outer universe. We show that the theory offers a plausible resolution to the information loss paradox, explains matter-antimatter asymmetry while maintaining consistency with anticipated CP-symmetry violation, and may reconcile general relativity with quantum mechanics through the rescaling mechanism of inverse inflation that eliminates physical singularities, all while remaining fully consistent with relevant cosmological observations.