The Bogoliubov Spectrum of a Massless Scalar Field in 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. Over the fitted decade the spectrum falls with a logarithmic slope of -16.694. The integrated number density is 1.379e-01 particles per unit volume in bounce units. 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.