PIRSA:07040011

Video URL

https://pirsa.org/07040011

Challenges of Explaining Cosmic Acceleration Through Modified Gravity

(2007). Challenges of Explaining Cosmic Acceleration Through Modified Gravity. Perimeter Institute for Theoretical Physics. https://pirsa.org/07040011

Challenges of Explaining Cosmic Acceleration Through Modified Gravity. Perimeter Institute for Theoretical Physics, Apr. 25, 2007, https://pirsa.org/07040011 

          @misc{ scivideos_PIRSA:07040011,
            doi = {10.48660/07040011},
            url = {https://pirsa.org/07040011},
            author = {},
            keywords = {Cosmology},
            language = {en},
            title = {Challenges of Explaining Cosmic Acceleration Through Modified Gravity},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2007},
            month = {apr},
            note = {PIRSA:07040011 see, \url{https://scivideos.org/index.php/pirsa/07040011}}
          }
Talk numberPIRSA:07040011
DOI10.48660/07040011
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

Among the possible explanations for the observed acceleration of the universe, perhaps the boldest is the idea that new gravitational physics might be the culprit. In this colloquium I will discuss some of the challenges of constructing a sensible phenomenological extension of General Relativity, give examples of some candidate models of modified gravity and survey existing observational constraints on this approach. I will conclude by discussing how we might hope to distinguish between modifications of General Relativity and dark energy as competing hypotheses to explain cosmic acceleration.