Binary Cosmogenesis

We explore a speculative extension of black-hole cosmology in which daughter universes are associated with binary black-hole mergers rather than (or in addition to) single collapses. Because the bounce mechanism we adopt fires at collapse, each progenitor has already produced a daughter before merging; we therefore interpret horizon fusion as the joining of the two daughters’ throats — a junction we conjecture itself reaches bounce conditions — yielding a genuinely two-parent child. We conjecture that the chirality of the fusing region — its integrated Chern–Pontryagin density, of which the radiated net helicity is the exterior witness — sets the initial kick of a rolling pseudoscalar in the child’s physics; tensor modes produced during the child’s own inflation are then helicity-biased, and the gravitational-anomaly leptogenesis of Alexander, Peskin and Sheikh-Jabbari (whose efficiency is disputed) converts the bias into the child’s baryon asymmetry. Exactly symmetric mergers are measure-zero: every realized child carries some tilt, with magnitudes distributed by the merger population. The framework’s falsifiable commitment is a predicted correlation between otherwise independent sky anomalies (galaxy-rotation asymmetry; cosmic birefringence), stated here in one-bit and decisive forms. We provide a frank novelty audit and state the principal unresolved objections. Revision history. BC 1.3 → BC 2.0 (June 2026). Scope narrowed: the paper now addresses only the chirality-to-leptogenesis conjecture. The four conditions the mechanism requires but does not yet establish are named explicitly rather than left as open questions between the lines. Lawbook recombination (“R”) — the conjecture that children inherit the parent’s physics constants — is withdrawn for lack of a proposed mechanism. The gravitational anomaly assignment (B−L vs. B+L) was corrected. Majorana neutrino mass is now stated as a prerequisite for the APS channel rather than a consequence. Model A (kick-driven rolling from the bounce’s Pontryagin charge) and Model B (continuously-sourced by the inflationary gravitational-wave background, as in APS) are distinguished; BC proposes Model A, the model for which no dedicated efficiency calculation yet exists.