PIRSA:11060092 Scientific Series Cosmology

DOI10.48660/11060092

Series: Cosmology and Gravitation

O'Connor, D. (2011). Lessons from an exactly solved interacting quantum field theory in de Sitter spacetime. Perimeter Institute. https://pirsa.org/11060092

O'Connor, Denjoe. Lessons from an exactly solved interacting quantum field theory in de Sitter spacetime. Perimeter Institute, Jun. 28, 2011, https://pirsa.org/11060092 

@misc{ pirsa_PIRSA:11060092,
  doi = {10.48660/11060092},
  url = {https://pirsa.org/11060092},
  author = {O{\textquoteright}Connor, Denjoe},
  keywords = {Cosmology},
  language = {en},
  title = {Lessons from an exactly solved interacting quantum field theory in de Sitter spacetime},
  publisher = {Perimeter Institute},
  year = {2011},
  month = {jun},
  note = {PIRSA:11060092 see, \url{https://pirsa.org}}
}

Abstract

It is argued that the correct quantization of a scalar field theory in de Sitter spacetime involves a de Sitter invariant state which is not the Bunch-Davies vacuum. A novel but natural de Sitter invariant alternative exists and it is suggested that this and is the prefered state for scalar field theories. The argument is based on the exact solution of an interacting scalar field theory.

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