We extend the σ-flip framework of Paper 1 1 to the full lifecycle of stellar evolution. The sameU (1) _σ gauge symmetry that produces dark matter via freeze-in at TQCD governs a subdominant bidirectional exchange between dark and visible sectors throughout stellar evolution: a reverse σ-flip (σ: −1 → +1) in dense molecular cloud cores contributes to stellar nucleation, while the direct σ-flip (σ: +1 → −1) at stellar death acts as an astrophysical probe of the freezein mechanism. This paper introduces two free parameters — the reverse σ-flip efficiency εᵣevand the reverse threshold density ρcʳeverse — and shows that both are independentlyconstrained by the observed star formation rate and the Jeans instability criterion, respectively. The direct σ-flip efficiency εdirect ≡ ε = 10 ⁶ is not a new parameter: it is inherited from the ⁻kinetic mixing of Paper 1. From these inputs we derive the Initial Mass Function slope α = 2. 32± 0. 15, consistent with the Salpeter value of 2. 35 9; a reinterpretation of the Chandrasekharlimit as the σ-flip activation threshold; and the Baryonic Tully-Fisher slope 3. 7 ± 0. 4. Wedemonstrate explicitly that the stellar-cycle contributions to ΩDM are sub-dominant by sevento eleven orders of magnitude, preserving the freeze-in result of Paper 1. Six new quantitativepredictions are derived for JWST, DUNE, Euclid, Rubin LSST, Gaia, and SKA.
Leandro de Oliveira (Thu,) studied this question.