Cosmological tests of general relativity

          @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}}
          }
          

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.