PIRSA:06090021 Public Lectures Cosmology

Conference/School: Natural Ultraviolet Cutoffs In Expanding Space-Times - 2006

Foster, B. (2006). Do background independent approaches to quantum gravity have something to say about this question?. Perimeter Institute. https://pirsa.org/06090021

Foster, Brendan. Do background independent approaches to quantum gravity have something to say about this question?. Perimeter Institute, Sep. 05, 2006, https://pirsa.org/06090021 

@misc{ pirsa_PIRSA:06090021,
  doi = {},
  url = {https://pirsa.org/06090021},
  author = {Foster, Brendan},
  keywords = {Cosmology},
  language = {en},
  title = {Do background independent approaches to quantum gravity have something to say about this question?},
  publisher = {Perimeter Institute},
  year = {2006},
  month = {sep},
  note = {PIRSA:06090021 see, \url{https://pirsa.org}}
}

Abstract

The question of how to describe a natural ultraviolet cutoff in an expanding space-time is of significance in several respects. First, it concerns the fate of general covariance in the presence of a natural UV cutoff. Second, it concerns the continued generating of degrees of freedom through expansion, which carries with it the possibility of an associated generating of vacuum energy. Finally, through inflation, a natural ultraviolet cutoff may have left observable imprints in the CMB.

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