Visible matter-branch baryogenesis from a thin-shell selection mechanism in radiatively stable flux-fixed GR (GCV)

Programme-status notice (29 July 2026): This record is retained as a historical/conditional benchmark and is not a current explanation of the observed matter-antimatter asymmetry. Its algebra is conditional on assumed benchmark states, a thin-shell selector, transmission law, CP/thermal ingredients, cleanup, and normalization. Neither current source result derives those ingredients or the observed baryon yield. See https://doi.org/10.5281/zenodo.21671960. The deposited files and original publication date are unchanged. --------------------------- 𝗧𝗵𝗶𝘀 𝗿𝗲𝗰𝗼𝗿𝗱 𝗽𝗿𝗼𝘃𝗶𝗱𝗲𝘀 𝘁𝗵𝗲 𝗽𝗮𝗽𝗲𝗿 “Visible matter-branch baryogenesis from a thin-shell selection mechanism in radiatively stable flux-fixed GR (GCV)”. The paper studies a 𝗯𝗲𝗻𝗰𝗵𝗺𝗮𝗿𝗸-𝗹𝗼𝗰𝗮𝗹 𝘃𝗶𝘀𝗶𝗯𝗹𝗲 𝗯𝗮𝗿𝘆𝗼𝗴𝗲𝗻𝗲𝘀𝗶𝘀 𝗺𝗲𝗰𝗵𝗮𝗻𝗶𝘀𝗺 inside radiatively stable flux-fixed GR (GCV). Starting from the GCV Einstein/source split and the associated 𝗴𝗼𝘃𝗲𝗿𝗻𝗮𝗻𝗰𝗲 𝗮𝗻𝗱 𝗳𝗼𝘂𝗻𝗱𝗮𝘁𝗶𝗼𝗻 𝗮𝗱𝗺𝗶𝘀𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝘆 𝗹𝗮𝘆𝗲𝗿𝘀, it analyzes a retained 𝗨𝗩 𝗯𝗲𝗻𝗰𝗵𝗺𝗮𝗿𝗸 𝗿𝗲𝗮𝗹𝗶𝘇𝗮𝘁𝗶𝗼𝗻 and an 𝗼𝗳𝗳𝗶𝗰𝗶𝗮𝗹 𝗔𝟮+𝗠𝟭 𝗯𝗲𝗻𝗰𝗵𝗺𝗮𝗿𝗸 𝗿𝗼𝘂𝘁𝗲. The central claim is that a lawful 𝘁𝗵𝗶𝗻-𝘀𝗵𝗲𝗹𝗹 𝘀𝗲𝗹𝗲𝗰𝘁𝗶𝗼𝗻 𝗺𝗲𝗰𝗵𝗮𝗻𝗶𝘀𝗺 can transmit the visible matter branch while strongly suppressing the visible antimatter partner, yielding an observed-scale visible baryon asymmetry at the reduced-benchmark level. The paper is 𝗻𝗼𝘁 a theorem over arbitrary UV completions and does 𝗻𝗼𝘁 claim a full dark-sector theory. Its scope is a 𝗯𝗲𝗻𝗰𝗵𝗺𝗮𝗿𝗸-𝗹𝗼𝗰𝗮𝗹 𝗺𝗲𝗰𝗵𝗮𝗻𝗶𝘀𝗺 𝗽𝗮𝗽𝗲𝗿 inside the unified GCV admissibility stack: GCV Einstein/source split, Governance, Foundation, UV benchmark realization, and baryogenesis route. 𝗧𝗵𝗲 𝗿𝗲𝘁𝗮𝗶𝗻𝗲𝗱 𝗼𝗳𝗳𝗶𝗰𝗶𝗮𝗹 𝗯𝗲𝗻𝗰𝗵𝗺𝗮𝗿𝗸 𝗶𝘀: Route: A2+M1Canonical reduced benchmark: E5 “All mild reductions”Representative reduced-benchmark yield: Y_B approximately 10^-10 The appendices provide the compact derivation spine and support tables for the benchmark-local shell result. Homepage: www.johansson.digital