The Standard Cosmological Model (ΛCDM) attributes the accelerated expansion of the universeto ”Dark Energy” of unknown nature, represented by a cosmological constant Λ that demands afine-tuning of approximately 120 orders of magnitude. In this work, we propose a paradigm shiftbased on the Quantum Diffusion (DQ-12) framework. We postulate that cosmic acceleration isnot caused by an intrinsic negative pressure of the vacuum, but emerges as an effective entropicforce associated with a diffusive transport process of information within a 12-dimensional subspace.By modeling the Universe as an informational flow through a subspace with variable diffusivityD(t), we demonstrate that the ”open” geometry of the future exerts a suction gradient upon thepresent. We extrapolate recent computational results from resonant cavities (DQ-Thruster), wheregeometric asymmetry induces net thrust (+58% gain), to the cosmological scale. This suggeststhat the universe behaves as a macroscopic entropic engine, where the expansion of space is thethermodynamic response required to maximize information diffusion.