PIRSA:07040011

Challenges of Explaining Cosmic Acceleration Through Modified Gravity

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

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

          @misc{ pirsa_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},
            year = {2007},
            month = {apr},
            note = {PIRSA:07040011 see, \url{https://pirsa.org}}
          }
Talk number
PIRSA:07040011
Collection
Talk Type
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.