Testing gravity on cosmic scales


Bean, R. (2010). Testing gravity on cosmic scales. Perimeter Institute. https://pirsa.org/10010082


Bean, Rachel. Testing gravity on cosmic scales. Perimeter Institute, Jan. 21, 2010, https://pirsa.org/10010082


          @misc{ pirsa_PIRSA:10010082,
            doi = {10.48660/10010082},
            url = {https://pirsa.org/10010082},
            author = {Bean, Rachel},
            keywords = {Cosmology},
            language = {en},
            title = {Testing gravity on cosmic scales},
            publisher = {Perimeter Institute},
            year = {2010},
            month = {jan},
            note = {PIRSA:10010082 see, \url{https://pirsa.org}}

Rachel Bean Cornell University


While the properties of gravity, and its consistency with General Relativity (GR), are well tested on solar system scales, within our system and the decay of binary pulsar orbits, they are, by comparison, poorly tested on cosmic scales. This is of particular interest as we try to understand the origins of cosmic acceleration, and whether they are a signature of deviations from GR. Using the latest measurements of the universe's expansion history, twinned with the evolution of large scale structure, we discuss the current constraints on gravity's behavior on the largest scales observable today.