Dirac Fermion Creation Through a Bounce and the Pauli Bound

On a cosmological bounce background with a single minimum of the scale factor and unit duration, in units set by that duration, the quantities reported here are obtained by direct numerical evolution of the field modes from the contracting branch to the expanding branch. The largest occupation found anywhere in the scan is 2.474e-02, at wavenumber 0.3 and mass 0.5. At wavenumber 1 and mass 2 the occupation falls to 1.874e-04, and at wavenumber 1 and mass 0.5 the occupation is 4.607e-03. The calculation is performed on a stated model background with stated vacuum conventions, and the code and full-precision output are deposited with the paper. This study is simulated and computed from those assumptions; it is not a measurement.