The Temperature at a Spin-Driven Bounce: Margins Against the Nucleosynthesis and Quark-Hadron Scales

The neutrino threshold corresponds to kT = 1.415e+03 MeV, which lies 3.2 orders of magnitude from the nucleosynthesis scale on the side recorded in the results file. The electron threshold corresponds to 3.200e+06 MeV, standing 6.5 orders of magnitude above the 1 MeV nucleosynthesis landmark. The neutron threshold corresponds to 1.372e+08 MeV, standing 6.0 orders of magnitude above the 150 MeV quark-hadron landmark. In plain terms, bounces controlled by electron or nucleon spin occur at energy scales far hotter than either landmark, so the standard sequence of quark-hadron transition followed by nucleosynthesis unfolds after such a bounce exactly as in the conventional hot history. Only a bounce controlled by the lightest species approaches the landmark scales at all, and even there the separation is measured in orders of magnitude rather than in factors of two. The study is a computation from stated assumptions, performed by the accompanying script; it is simulated, not measured.