Unified Mass–Energy Dissolution Cosmology (UMEDC)

This record contains the preprint of Unified Mass–Energy Dissolution Cosmology (UMEDC): A Staged-Transfer Baseline for Late-Time Cosmic Dynamics by Osama Hammoud. UMEDC is a new cosmological framework that extends the standard ΛCDM model by treating matter, dark matter, and dark energy as sequential phases of a single substance. In this theory, a condensed mass reservoir gradually dissolves into clusterable dark matter, which then transforms into a vacuum-like energy component driving late-time acceleration. The work: Introduces the theoretical foundation and continuity equations of staged mass-to-energy transfer. Derives background expansion and growth equations consistent with General Relativity and FRW geometry. Explores implications for expansion history, deceleration parameter, distances, and structure growth observables such as fσ8 and S8. Connects predictions to observational probes: Type Ia supernovae, BAO, cosmic chronometers, redshift-space distortions, weak lensing, CMB lensing, ISW, and clusters. Presents forecasts for Stage-IV surveys (Euclid, Rubin/LSST, DESI, CMB-S4) showing sub-percent sensitivity to the model’s parameters. Discusses philosophical implications, positioning UMEDC as a process-centered view of the cosmos. This Zenodo entry includes both the PDF and full LaTeX source to ensure reproducibility and long-term accessibility. The model reduces to ΛCDM in the limit of vanishing transfer rates, making it a minimal, falsifiable extension testable with near-term data.