Vacuum Polarization Effects During the Reheating Epoch
arXiv:2505.03453 · doi:10.1103/wdz1-gytd
Abstract
Quantum effects in the era of reheating of the universe after inflation are considered. A semiclassical approach to gravity theory is applied within Starobinsky's inflationary model with backreaction. Some subtleties associated with accounting for quantum effects in the one-loop approximation are clarified. An estimate of the contribution of vacuum polarization in the stress-energy tensor of matter fields to the cosmological particle creation due to the scalaron decay is presented.
17 pages, 2 figures, minor misprints are corrected