Reciprocal Penrose–CPT Cosmology

SCQG Paper 10 of 28 This paper develops a cosmological model in which one completed universe has two reciprocal orientations of time. Each orientation has its own matter, geometry and forward local clock. The beginning of either orientation is paired with the terminal boundary of the other through conditions on their endpoint data. Their lifecycle labels satisfy u₋ = 1 − u₊. Differences between paired screen capacities, cell sizes and metrics enter a causal response within each orientation. The paper states the action and conservation conditions under which the resulting stress produces accelerated expansion. It gives equations for the homogeneous evolution and criteria for inflation to end, reciprocal comparisons to reach parity, and a smooth terminal conformal boundary to exist. Parity means agreement of the specified expansion, metric, capacity and cell comparisons within their stated tolerances. The results include local existence and uniqueness of the cosmological solutions, preservation of the Friedmann constraint, stability bounds, and exact relations between expansion and horizon capacity. Worked models calculate response decay and inflationary exit. Separate physical conditions describe separation into viable daughter systems near the terminal regime. This is Paper 10 of the Semantic Commitment / Quantum Gravity series.