Photon Creation by a Torsion-Coupled Gauge Field at a Bounce

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 control run returns an occupation of 1.233e-32, which is the size of the numerical residue and sets the floor below which no claimed creation in this paper should be believed. Switching the coupling on, the occupation at alpha equal to one half is 4.087e-02, at alpha equal to one it is 3.281e-01, and at alpha equal to two it reaches 4.804e+00. 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.