The Big Pump: Black Holes as Cross-Dimensional Venturi Engines Driving Cosmic Expansion Without Dark Energy or Exotic Dark Matter

We present a novel cosmological framework where black holes act as cross-dimensional energy pumps, transferring matter and energy across a fifth-dimensional overlay to drive the observed expansion of the universe through reaction thrust from quasar and pulsar jets. This "Big Pump" mechanism eliminates the need for dark energy, reinterprets dark matter as ordinary mass accumulated in the fifth dimension and gravitationally coupled via vibrational leakage (without requiring exotic particles), and explains the cosmic web as flow lines toward these pumps. Drawing on observational tensions in the standard ΛCDM model—such as ∼4σ deviations in high-redshift quasar Hubble diagrams—we argue that cumulative thrust from early-active quasars (peaking at z ∼2−3) provides a physical alternative to vacuum energy. A detailed rewind simulation of high-redshift quasar data, using numerical integration of a modified Friedmann equation, reveals convergence to a compact initial configuration without a singularity, supporting a "flip" origin from spacetime instantiation ripples. The ringback mechanism, creating primordial black holes (PBHs) identified as JWST “little red dots,” is expanded with evidence from CMB anomalies and non-Gaussianity. Counterarguments against calibration biases and systematic effects are addressed, showing consistency across independent datasets. Predictions include patchy expansion correlating with quasar density and linear redshift trends in JWST surveys. This speculative yet data-aligned model unifies cosmic phenomena through equilibrium-driven dimensional dynamics and serves as an extension of the unified theory in "QBB - Revealing the Dark!" (DOI: 10.5281/zenodo.18160337), building on its 5D overlay to specifically address cosmic expansion.Authors Note: Speculative, yes. But at this scale everything is and always starts as speculative. THe mechanism I have described fits the facts and explains the expansion that fits into my QBB set of theories of the universe. (Quantum Big Bang). To me this is elegant and everything in the unvierse is eligant indeed or we have missed the truth of our universe. RJW