Mode Evolution of a Scalar Field Through a Cosmological 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 longest mode, at wavenumber 0.1 in bounce units, emerges with occupation 1.012e+03, while the mode at wavenumber 1 carries 3.281e-01 and the shortest mode examined, at wavenumber 10, carries only 6.051e-18. The ordering is monotone in wavenumber across all five cases. 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.