PIRSA:06090021

Video URL

https://pirsa.org/06090021

Do background independent approaches to quantum gravity have something to say about this question?

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

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

          @misc{ scivideos_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 for Theoretical Physics},
            year = {2006},
            month = {sep},
            note = {PIRSA:06090021 see, \url{https://scivideos.org/index.php/pirsa/06090021}}
          }

Brendan Foster Utrecht University

Talk numberPIRSA:06090021
Source RepositoryPIRSA
Collection
Talk Type Public Lectures
Subject

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.