Universal Processing Law (UPL): A Parameter-Free Derivation of the Cosmological Constant

This paper presents a parameter-free derivation of the vacuum energy density of the universe (cosmological constant) from the first principles of the Universal Processing Law (UPL). Dark energy is identified as the accumulated hardware residue of Decisive Clicks — the irreversible quantum state-selection events in the UPL framework. The microscopic Click rate of any matter particle is identified with the Zitterbewegung frequency of the Dirac equation. Each Click deposits a residue equal to the de Sitter horizon energy into the dormant vacuum hardware pixels. Integrating over the full matter history of the observable universe using the Friedmann equation, all physical constants cancel and the result is: _ = 23 ₂ₑ₈ₓ ≈ 5. 688 × 10⁻²⁷ kg/m ³ The observed value is 5. 844 × 10⁻²⁷ kg/m ³. Agreement: 97. 3%. Zero free parameters. The factor 2/3 is a pure geometric consequence of the Zitterbewegung frequency (factor 2) and three-dimensional spatial integration (factor 3). Standard quantum field theory overpredicts vacuum energy by 10¹²³. UPL reproduces it to 97. 3% from three axioms. This result builds upon the foundational UPL preprint (DOI: 10. 5281/zenodo. 19154977) and the Track 2 derivations (DOI: 10. 5281/zenodo. 19167339). All theoretical concepts, derivations, and original ideas are the sole intellectual work of Ahmed Lahmidi. Contact: ahmed. lahmidi. contact@gmail. com