Cosmological Dynamics of Vacuum Elasticity: Late-Time Expansion without a Fundamental Cosmological Constant in the TUO–NS Framework.

This Zenodo record accompanies Article F of the TUO–NS (Théorie de l’Univers-Onde – Navier–Stokes) research program. The archive contains: - the full article manuscript (PDF), - a self-contained Python script implementing the homogeneous TUO–NS cosmological equations, - the numerical pipeline used to generate the benchmark figures presented in the paper. The work explores an alternative interpretation of late-time cosmic acceleration in which the vacuum is modeled as an effective elastic medium capable of saturation and relaxation. Within this framework, cosmic expansion emerges dynamically from the homogeneous vacuum response, without postulating a fundamental cosmological constant and without introducing additional gravitational degrees of freedom. All numerical results are produced under a benchmark policy: no data-driven tuning, no likelihood fitting, and no posterior optimization. The gravitational normalization is fixed upstream by a vacuum-saturation invariant, and departures from the standard ΛCDM background arise solely from the internal dynamics of the elastic vacuum sector. This release is intended for scientific transparency and reproducibility. It documents the benchmark-level background cosmology calculations underlying the figures of Article F. Full Boltzmann-code implementations and global statistical inference are left to future work.