Adiabatic Subtraction and the Vacuum Energy Density at the Bounce Point

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 unrenormalised density on the grid is 5.493e+01. Subtracting at zeroth order leaves a remainder of 2.015e-03; subtracting at second order leaves 3.897e-02. 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.