2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/198099The observed luminosity deficit of Type Ia supernovae (SNe Ia) at high redshift z can be explained by partial conversion to weak vector bosons of photons crossing large-scale electroweak domain boundaries, making Hubble acceleration only apparent and eliminating the need for a cosmological constant > 0.15 pages, 7 figures. Adopted conventions of arxiv:0804.2284, simplified computation of luminosity distributions, added footnotesAstrophysicsHigh Energy Physics - Phenomenologytext