Video URL

https://pirsa.org/07020010

Cosmological tests of general relativity

Song, Y. (2007). Cosmological tests of general relativity. Perimeter Institute for Theoretical Physics. https://pirsa.org/07020010

Song, Yong-Seon. Cosmological tests of general relativity. Perimeter Institute for Theoretical Physics, Feb. 20, 2007, https://pirsa.org/07020010 

          @misc{ scivideos_PIRSA:07020010,
            doi = {10.48660/07020010},
            url = {https://pirsa.org/07020010},
            author = {Song, Yong-Seon},
            keywords = {Cosmology},
            language = {en},
            title = {Cosmological tests of general relativity},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2007},
            month = {feb},
            note = {PIRSA:07020010 see, \url{https://scivideos.org/index.php/pirsa/07020010}}
          }

Yong-Seon Song University of Portsmouth

DOI 10.48660/07020010
Source Repository PIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

The general relativity has been tested from mm scales to solar system scales. The discovery of cosmic acceleration motivates the study of infrared modification of gravity at horizon scales. The cosmic expansion can be accelerated by dark energy without any correction to GR, but alternatively it can be explained by the modified gravity at large scales without introducing the unknown exotic energy. We introduce the linear structure formation theory of DGP and f(R) gravity, and present what it the strategy to test general relativity at cosmological scales.