Geometric Origin of Dark Components: A Causal-Asymmetry Hypothesis

This working draft refines the geometric–causal–asymmetry hypothesis by reorganizing the region-to- component mapping. Under Planck 2018 parameters, defining d_* = (Ω_m)^(1/3) · R_PH ≈ 32 Gly as a distinguished scale between the cosmic event horizon and the particle horizon, the universe partitions into three volumetric regions whose volume fractions match the observed cosmological component ratios: • Inner region (0 ~ R_EH): V/V_PH = 4.45%, compared to Ω_b = 4.93% (−9.8% deviation) • Inner-shell donut (R_EH ~ d_*): V/V_PH = 26.93%, compared to Ω_c = 26.45% (+1.8% deviation) • Outer-shell donut (d_* ~ R_PH): V/V_PH = 68.62%, compared to Ω_Λ = 68.47% (+0.2% deviation) The simultaneous agreement at the few-percent level for all three components, together with the previously verified donut acceleration result, motivates the present framework. The 9.8% deviation in the inner region is interpreted as evidence of continuous baryon genesis: vacuum energy in the inner-shell donut (R_EH ~ d_*) is converted into baryonic matter inside R_EH through a mechanism analogous to Hawking-Unruh radiation, where the standard derivation specifies only an energy spectrum without identifying the species of emitted matter. This proposal is consistent with the previously verified result that the baryonic mass in the entire (R_EH ~ R_PH) donut produces a Newtonian acceleration matching the Friedmann acceleration to within 0.3% under Planck 2018 parameters.