The application of adiabatic regularization to calculations of cosmological interest

@article{Birrell1978TheAO,
  title={The application of adiabatic regularization to calculations of cosmological interest},
  author={N. D. Birrell},
  journal={Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences},
  year={1978},
  volume={361},
  pages={513 - 526}
}
It is shown that the method of adiabatic regularization, proposed by Parker & Fulling for the removal of divergences in the vacuum expectation value of the stress tensor of a quantized field propagating in a Robertson-Walker background, is well suited to calculations of cosmological interest. After verifying the equivalence of the adiabatic and point-splitting regularization schemes, both analytical and numerical examples of the use of the former method are given.